Properties of the Number 56856

Fifty-Six Thousand Eight Hundred Fifty-Six

Basics

Value: 56855 → 56856 → 56857

Parity: even

Prime: No

Previous Prime: 56843

Next Prime: 56857

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 2 ³ × 3 × 23 × 103

Divisors: 1, 2, 3, 4, 6, 8, 12, 23, 24, 46

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101111000011000

Octal: 157030

Duodecimal: 28AA0

Hexadecimal: de18

Square: 3232604736

Square Root: 238.44496220302076

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) is the number of terms less than A276086(n) in the range of A276086, where A276086 is the primorial base exp-function. A376411

Octagonal numbers which are the sums of exactly two positive octagonal numbers. A136346

Integers k such that there exists an integer 0<m<k such that (1/σ(m)² + 1/σ(k)²)*(m+k)² = 1. A383964

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, -1, 0), (-1, -1, 1), (-1, 1, -1), (1, 0, 1)}. A148060

Expansion of g.f. A(x,y) satisfying 0 = ∑_n=-oo..+oo xⁿ * A(x,y)ⁿ * (y - x^n-1)ⁿ⁺¹, as a triangle of coefficients T(n,k) of xⁿ*y^k in A(x,y), read by rows n >= 0. A366730

Triangle of numbers related to rooted trees and unrooted planar trees. A56856

a(n) = n⁸*(5·n+4). A229151