Properties of the Number 81851

Eighty-One Thousand Eight Hundred Fifty-One

Basics

Value: 81850 → 81851 → 81852

Parity: odd

Prime: No

Previous Prime: 81847

Next Prime: 81853

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 7 × 11 × 1063

Divisors: 1, 7, 11, 77, 1063, 7441, 11693, 81851

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111110111011

Octal: 237673

Duodecimal: 3B44B

Hexadecimal: 13fbb

Square: 6699586201

Square Root: 286.09613768801563

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/((1-5x)(1-9x)(1-11x)). A20499

Consider recurrence b(0) = (2n+1)/4, b(n) = b(0)*ceiling(b(n-1)); sequence gives first integer reached (or -1 if no integer is ever reached). A81851