Properties of the Number 87591

Eighty-Seven Thousand Five Hundred Ninety-One

Basics

Value: 87590 → 87591 → 87592

Parity: odd

Prime: No

Previous Prime: 87589

Next Prime: 87613

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 7 × 43 × 97

Divisors: 1, 3, 7, 21, 43, 97, 129, 291, 301, 679

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101011000100111

Octal: 253047

Duodecimal: 42833

Hexadecimal: 15627

Square: 7672183281

Square Root: 295.95776725742473

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

Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-2)*b(n-1)*b(n), where a(0) = 2, a(1) = 3, b(0) = 1, b(1) = 4, b(2) = 5, and (a(n)) and (b(n)) are increasing complementary sequences. A296281

a(n) = (n/2) * (n³ - 2·n² - 2·n + 5). A242983

Number of nX5 0..1 arrays with every element equal to 1, 2, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero. A299609

a(n) = A087590(n)^1/2. A87591