Properties of the Number 56981

Fifty-Six Thousand Nine Hundred Eighty-One

Basics

Value: 56980 → 56981 → 56982

Parity: odd

Prime: No

Previous Prime: 56963

Next Prime: 56983

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 19 × 2999

Divisors: 1, 19, 2999, 56981

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101111010010101

Octal: 157225

Duodecimal: 28B85

Hexadecimal: de95

Square: 3246834361

Square Root: 238.7069332884992

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

Diagonal in array of n-gonal numbers A081422. A81438

Partition numbers rounded to nearest integer given by the Hardy-Ramanujan approximate formula. A50811

Number of non-abelian groups of order prime(n)⁶. A271811

Number of integers in n-th generation of tree T(2^-1/2) defined in Comments. A274156

a(1) = 1; for n >= 1, replace each part, with repetitions, of every part k in each partition of n with a(k), then take the sum to get a(n+1). A96770

a(n) = A002596(n)². A56981