Properties of the Number 81535

Eighty-One Thousand Five Hundred Thirty-Five

Basics

Value: 81534 → 81535 → 81536

Parity: odd

Prime: No

Previous Prime: 81533

Next Prime: 81547

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 5 × 23 × 709

Divisors: 1, 5, 23, 115, 709, 3545, 16307, 81535

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111001111111

Octal: 237177

Duodecimal: 3B227

Hexadecimal: 13e7f

Square: 6647956225

Square Root: 285.5433417189061

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

Number of partitions p of n including round(mean(p)) as a part. (This is "Mathematica round"). A241338

Number of partitions p of n such that round(mean(p)) is a part of p; here, round(x) means floor(x + 1/2). A241733

Coefficient of·in the reduction by x² -> x+1 of the polynomial p(n,x) defined at Comments. A192966

Numbers k such that 4·k + {1, 3, 7, 9, 13, 19} are all prime. A254288

Numbers n such that 4n+1, 4n+3, 4n+7, 4n+9 and 4n+13 are prime. A254376

Sum of row n of triangle in A081536. A81535