Properties of the Number 81955

Eighty-One Thousand Nine Hundred Fifty-Five

Basics

Value: 81954 → 81955 → 81956

Parity: odd

Prime: No

Previous Prime: 81953

Next Prime: 81967

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 5 × 37 × 443

Divisors: 1, 5, 37, 185, 443, 2215, 16391, 81955

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100000000100011

Octal: 240043

Duodecimal: 3B517

Hexadecimal: 14023

Square: 6716622025

Square Root: 286.27783707440574

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

Triangle read by rows, T(n, k) = binomial(n, k)*hypergeom([k-n, n+1], [k+2], -4), for n >= 0 and 0 <= k <= n. A297899

a(n) = sum of cubes of p(j) - p(i), for 0 <= i < j <= n, where p(0) = 1. A24527

a(n) = 2^r*3^s where r = n(n+1)/2 and s = n(n-1)/2. A81955