Properties of the Number 87725

Eighty-Seven Thousand Seven Hundred Twenty-Five

Basics

Value: 87724 → 87725 → 87726

Parity: odd

Prime: No

Previous Prime: 87721

Next Prime: 87739

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 5 ² × 11 ² × 29

Divisors: 1, 5, 11, 25, 29, 55, 121, 145, 275, 319

Polygonal

Triangular: No

Square: No

Pentagonal: Yes

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10101011010101101

Octal: 253255

Duodecimal: 42925

Hexadecimal: 156ad

Square: 7695675625

Square Root: 296.1840643923977

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

The first of three consecutive pentagonal numbers the sum of which is equal to the sum of three consecutive primes. A298250

Odd multiplicative orders of 2+-i modulo primes p == 3 (mod 4). A385217

Multiplicative orders of 2+-i modulo p == 3 (mod 4) that are not divisible by 2 or 3. A385219

a(n) = 4·n³ - 3·n + 1. A280089

a(n) = n⁴/6 - 2·n³/3 - n²/6 + 5·n/3 + 1. A299198

Numbers that are both the sum of three consecutive primes and the sum of three consecutive squares. A388071

Maximal number of moves required for the n X n generalization of the sliding block 15-puzzle (or fifteen-puzzle). A87725