Properties of the Number 81164

Eighty-One Thousand One Hundred Sixty-Four

Basics

Value: 81163 → 81164 → 81165

Parity: even

Prime: No

Previous Prime: 81163

Next Prime: 81173

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 103 × 197

Divisors: 1, 2, 4, 103, 197, 206, 394, 412, 788, 20291

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110100001100

Octal: 236414

Duodecimal: 3AB78

Hexadecimal: 13d0c

Square: 6587594896

Square Root: 284.89296235603996

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

Number of distinct cycle lengths in range [A014137(n-1)..A014138(n-1)] of permutation A057505/A057506. A81164

Number of nX5 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 1 0 and 1 0 1 vertically. A207855