Properties of the Number 57526

Fifty-Seven Thousand Five Hundred Twenty-Six

Basics

Value: 57525 → 57526 → 57527

Parity: even

Prime: No

Previous Prime: 57503

Next Prime: 57527

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 × 7 ² × 587

Divisors: 1, 2, 7, 14, 49, 98, 587, 1174, 4109, 8218

Polygonal

Triangular: No

Square: No

Pentagonal: Yes

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1110000010110110

Octal: 160266

Duodecimal: 2935A

Hexadecimal: e0b6

Square: 3309240676

Square Root: 239.84578378616538

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) = n²*(3·n² - 1)/2. A260810

a(n) = 3·a(n-1) - 3·a(n-2) + 2·a(n-3) - 2·a(n-4) + a(n-5) for n >= 10, a(0) = 2, a(1) = 4, a(2) = 7, a(3) = 12, a(4) = 20, a(5) = 32, a(6) = 50, a(7) = 77, a(8) = 116, a(9) = 174. A289115

Number of applications of f to reduce n to 1, where f(k) is the integer among k/2,(k-1)/4, (k+1)/4. A57526

Maximum size of a Sidon subset of {0,1}ⁿ. A309370