Properties of the Number 81252

Eighty-One Thousand Two Hundred Fifty-Two

Basics

Value: 81251 → 81252 → 81253

Parity: even

Prime: No

Previous Prime: 81239

Next Prime: 81281

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ² × 37 × 61

Divisors: 1, 2, 3, 4, 6, 9, 12, 18, 36, 37

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10011110101100100

Octal: 236544

Duodecimal: 3B030

Hexadecimal: 13d64

Square: 6601887504

Square Root: 285.04736448527285

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

a(n) = ∑_i=0..n digsum₇(i)⁴, where digsum₇(i) = A053828(i). A231679

Sizes of successive increasing gaps between 2-pseudoprimes. A175738

The least common multiple of 1 + n² and 1 + n³. A281661

Number of near-magic (only short lines are magic) knight's tours on a 4 X 2n board. A330610

Partial sums of A053646. A81252