555 (number)

← 554 555 556 →
List of numbers; Integers; ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	five hundred fifty-five
Ordinal	555th; (five hundred fifty-fifth)
Factorization	3 × 5 × 37
Greek numeral	ΦΝΕ´
Roman numeral	DLV, dlv
Binary	10001010112
Ternary	2021203
Senary	23236
Octal	10538
Duodecimal	3A312
Hexadecimal	22B16

555 (five hundred [and] fifty-five) is the natural number following 554 and preceding 556.

In mathematics

555 is a sphenic number. In base 10, it is a repdigit, and because it is divisible by the sum of its digits, it is a Harshad number. It is also a Harshad number in binary, base 11, base 13 and hexadecimal.

555 is a Harshad number as 555 ÷ (5, 5, 5) is 555 ÷ 15 is 37.^[1]

It is the sum of the first triplet of three-digit permutable primes in decimal:

113+131+311=555

.

It is the twenty-sixth number such that its Euler totient (288) is equal to the totient value of its sum-of-divisors: $\varphi (555)=\varphi (\sigma (555))$ .^[2]

In religion

555 in Christianity is either thought to be or is descriptive of the Number of the Beast. ^[3]

References

^ "Properties of number 555". www.numbersaplenty.com. Archived from the original on 2024-12-06. Retrieved 2025-04-03. It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 37 = 555 / (5 + 5 + 5).
^ Sloane, N. J. A. (ed.). "Sequence A006872 (Numbers k such that phi(k) is phi(sigma(k)).)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2023-08-31.
^ "What does the number 555 (Five hundred fifty-five) represent in the world of mysticism?". https://www.quora.com/. In the Mandebrot Set is the origin of Self-Similarity(Wikipedia) called the Myrberg point, Myp = -1.401155189, which is the point of creation (time forward) and destruction (time backward). The number 5.55 describes the Beast number , 666 , when used as a power function on the Myrberg point , Myp , natural log e = 2.7182818285: 666 = e ^ (Myp^5.55). the mystic number , 8.88 , (Christ gematric) , can derive the most important number in number theory and physics , called the Euler-Mascheroni constant = EM = .577215665 , when used as a power function on the Myrberg point , Myp: {{cite web}}: External link in |website= (help)

External links

Media related to 555 (number) at Wikimedia Commons

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[1] "Properties of number 555". www.numbersaplenty.com. Archived from the original on 2024-12-06. Retrieved 2025-04-03. It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 37 = 555 / (5 + 5 + 5).

[2] Sloane, N. J. A. (ed.). "Sequence A006872 (Numbers k such that phi(k) is phi(sigma(k)).)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2023-08-31.

[3] "What does the number 555 (Five hundred fifty-five) represent in the world of mysticism?". https://www.quora.com/. In the Mandebrot Set is the origin of Self-Similarity(Wikipedia) called the Myrberg point, Myp = -1.401155189, which is the point of creation (time forward) and destruction (time backward). The number 5.55 describes the Beast number , 666 , when used as a power function on the Myrberg point , Myp , natural log e = 2.7182818285: 666 = e ^ (Myp^5.55). the mystic number , 8.88 , (Christ gematric) , can derive the most important number in number theory and physics , called the Euler-Mascheroni constant = EM = .577215665 , when used as a power function on the Myrberg point , Myp: {{cite web}}: External link in |website= (help)

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