Properties of the Number 87171

Eighty-Seven Thousand One Hundred Seventy-One

Basics

Value: 87170 → 87171 → 87172

Parity: odd

Prime: No

Previous Prime: 87151

Next Prime: 87179

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 7 ² × 593

Divisors: 1, 3, 7, 21, 49, 147, 593, 1779, 4151, 12453

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101010010000011

Octal: 252203

Duodecimal: 42543

Hexadecimal: 15483

Square: 7598783241

Square Root: 295.247353925484

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) = ∑_{k=0..floor((n-2)/3)} Stirling1(n,3·k+2). A357836

Triangle T, read by rows, where T(n,k) = [Tⁿ](n-k-1,0); i.e., where row n of T equals the initial n terms of column 0 in matrix power Tⁿ, reversed and with an appended '1', for n>0, with T(0,0)=1. A167015

Expansion of (1 + 5·x)/(1 + 9·x + 25·x²). A87171