Properties of the Number 55681

Fifty-Five Thousand Six Hundred Eighty-One

Basics

Value: 55680 → 55681 → 55682

Parity: odd

Prime: Yes

Previous Prime: 55673

Next Prime: 55691

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 55681

Divisors: 1, 55681

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101100110000001

Octal: 154601

Duodecimal: 28281

Hexadecimal: d981

Square: 3100373761

Square Root: 235.96821819897696

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

Expansion of (1+3·x)/(1-2·x-7·x²). A96980

Primes of the form k² + k + 55661, with k >= 0. A116206

Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 397", based on the 5-celled von Neumann neighborhood. A288010

Fifth term of weak prime sextet: p(m-3)-p(m-4) < p(m-2)-p(m-3) < p(m-1)-p(m-2) < p(m)-p(m-1) < p(m+1)-p(m). A54832

A014486-indices of binary trees whose left and right subtree are identical. A83938

Leading diagonal of triangle in A072467. A72468

Primes of the form pq - 6, where p and q are consecutive primes. A99775

Greatest prime factor of 2·n⁴ + 1. A140538

Nonstandard Jacobi primes. A275879

Primes p such that p - 3 divides 3^p - 3. A302988