Properties of the Number 57556

Fifty-Seven Thousand Five Hundred Fifty-Six

Basics

Value: 57555 → 57556 → 57557

Parity: even

Prime: No

Previous Prime: 57529

Next Prime: 57557

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 14389

Divisors: 1, 2, 4, 14389, 28778, 57556

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1110000011010100

Octal: 160324

Duodecimal: 29384

Hexadecimal: e0d4

Square: 3312693136

Square Root: 239.90831582085687

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

Number of compositions of n with parts in N which avoid the adjacent pattern 111. A128695

a(n) = ∑_k=0..n 2^n-k * binomial(3·n,k). A385004

Numerator of 4·H(n,4,1), a generalized harmonic number. See A075136. A74598

Start from the singleton set S = {n}, and unless 1 is already a member of S, generate on each iteration a new set where each odd number k is replaced by 3k+1, and each even number k is replaced by 3k+1 and k/2. a(n) is the total size of the set from the singleton through after the first iteration which has produced 1 as a member, inclusive. A291213

Lexicographic ordering of M·M x M, where M={0,1,2,...}. A57556