Properties of the Number 55808

Fifty-Five Thousand Eight Hundred Eight

Basics

Value: 55807 → 55808 → 55809

Parity: even

Prime: No

Previous Prime: 55807

Next Prime: 55813

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 ⁹ × 109

Divisors: 1, 2, 4, 8, 16, 32, 64, 109, 128, 218

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1101101000000000

Octal: 155000

Duodecimal: 28368

Hexadecimal: da00

Square: 3114532864

Square Root: 236.2371689637344

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

Numbers of the form p⁹*q where p and q are distinct primes. A179692

a(n) = a(n-1)+a(m), where m=2n-2-2^p+1 and 2^p<n-1<=2^p+1, for n >= 4. A50071

a(n) = Fibonacci(n) AND Fibonacci(n+1). A51122

Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 246", based on the 5-celled von Neumann neighborhood. A287136

Number of 2's in n-th "Kolakoski" string defined in A054349. A111123

The number of overpartitions of n with restricted odd differences. A260890

Numbers n such that n and n+1 both have 20 divisors. A274361

Number of length 3 0..n arrays with each partial sum starting from the beginning no more than sqrt(3) standard deviations from its mean. A244942

Numbers n such that 83·2ⁿ-1 is prime. A50567

Number of trihexagonal magic figures of order n using the numbers 1 through 3·n*(n+1)/2 (the 2·n X 2·n triangular array), obtained by applying the trihexagonal tiling so that triangular and hexagonal faces appear alternately, such that all triangular faces share a common sum and all hexagonal faces share a common sum (the latter being exactly twice the former), counted up to rotations and reflections of the overall triangular shape. A391236