Properties of the Number 87125

Eighty-Seven Thousand One Hundred Twenty-Five

Basics

Value: 87124 → 87125 → 87126

Parity: odd

Prime: No

Previous Prime: 87121

Next Prime: 87133

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 ³ × 17 × 41

Divisors: 1, 5, 17, 25, 41, 85, 125, 205, 425, 697

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101010001010101

Octal: 252125

Duodecimal: 42505

Hexadecimal: 15455

Square: 7590765625

Square Root: 295.16944286290885

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

Numbers n that are the hypotenuse of exactly 31 distinct integer-sided right triangles, i.e., n² can be written as a sum of two squares in 31 ways. A97244

Numbers that are the sum of 2 nonzero squares in 7 or more ways. A25298

Numbers that are the sum of 2 nonzero squares in 8 or more ways. A25299

Numbers that are the sum of 2 distinct nonzero squares in 7 or more ways. A25317

Numbers that are the sum of 2 distinct nonzero squares in 8 or more ways. A25318

Numbers that are the sum of 2 nonzero squares in exactly 8 ways. A25291

Numbers that are the sum of 2 distinct nonzero squares in exactly 8 ways. A25309

Numbers k such that both k and the k-th triangular number are binary palindromes. A350989

Indices k of hex numbers H(k) that are also triangular. A87125