Properties of the Number 81937

Eighty-One Thousand Nine Hundred Thirty-Seven

Basics

Value: 81936 → 81937 → 81938

Parity: odd

Prime: Yes

Previous Prime: 81931

Next Prime: 81943

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 81937

Divisors: 1, 81937

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100000000010001

Octal: 240021

Duodecimal: 3B501

Hexadecimal: 14011

Square: 6713671969

Square Root: 286.24639735724185

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

Primes whose base-4 representation also is the base 2-representation of a prime. A235461

Primes of form n² + 4096. A256836

Primes of the form k² + prime(k) + 1. A63461

Array read by antidiagonals: T(n,k) is the number of k-tuples of permutations of [n] which commute, divided by n!, n >= 0, k >= 1. A362826

Even long legs of primitive Pythagorean triangles sorted on semiperimeter. A81937