Properties of the Number 2555

Two Thousand Five Hundred Fifty-Five

Basics

Value: 2554 → 2555 → 2556

Parity: odd

Prime: No

Previous Prime: 2551

Next Prime: 2557

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 5 × 7 × 73

Divisors: 1, 5, 7, 35, 73, 365, 511, 2555

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100111111011

Octal: 4773

Duodecimal: 158B

Hexadecimal: 9fb

Square: 6528025

Square Root: 50.547007824400445

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

a(n) = n*(2·n + 3). A14106

a(n) = a(n-1) + a(n-7), with a(i) = 1 for i = 0..6. A5709

Numerators of cosecant numbers -2*(2^{2·n - 1} - 1)*Bernoulli(2·n); also of Bernoulli(2·n, 1/2) and Bernoulli(2·n, 1/4). A1896

Number of partitions of n such that there is exactly one part which occurs twice, while all other parts occur only once. A90858

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 2 3 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 2 3 4 6 or 7. A252407

T(n,k)=Number of idempotent n X n 0..k matrices of rank n-1. A224333

Number of ways to write n as an ordered sum of 5 primes. A340961

Numbers k such that [A070080(k), A070081(k), A070082(k)] is an integer triangle with integer area. A70142

Numbers using only the digits 2 and 5, that are both curved and straight. A72961

Numbers k such that 2^k+1 == 1 (mod k). A187787