Properties of the Number 81651

Eighty-One Thousand Six Hundred Fifty-One

Basics

Value: 81650 → 81651 → 81652

Parity: odd

Prime: No

Previous Prime: 81649

Next Prime: 81667

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 17 × 1601

Divisors: 1, 3, 17, 51, 1601, 4803, 27217, 81651

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111011110011

Octal: 237363

Duodecimal: 3B303

Hexadecimal: 13ef3

Square: 6666885801

Square Root: 285.74639105332545

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 k such that k and k² use only the digits 0, 1, 5, 6 and 8. A136870

a(n) = floor((3/2)^ⁿ), where x^ⁿ is the power tower x^{x^(...^x}) with n x's. A81651