Properties of the Number 81155

Eighty-One Thousand One Hundred Fifty-Five

Basics

Value: 81154 → 81155 → 81156

Parity: odd

Prime: No

Previous Prime: 81131

Next Prime: 81157

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 16231

Divisors: 1, 5, 16231, 81155

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110100000011

Octal: 236403

Duodecimal: 3AB6B

Hexadecimal: 13d03

Square: 6586134025

Square Root: 284.8771665121654

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

Partial sums of the partition numbers A000041 of the positive integers. A26905

Number of partitions p of n such that 4·min(p) is a part of p. A238591

Number of odd cycles in range [A014137(n-1)..A014138(n-1)] of permutation A057505/A057506, with fixed-points of both A057163 and A057164. A81155