Properties of the Number 81652

Eighty-One Thousand Six Hundred Fifty-Two

Basics

Value: 81651 → 81652 → 81653

Parity: even

Prime: No

Previous Prime: 81649

Next Prime: 81667

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 137 × 149

Divisors: 1, 2, 4, 137, 149, 274, 298, 548, 596, 20413

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 10011111011110100

Octal: 237364

Duodecimal: 3B304

Hexadecimal: 13ef4

Square: 6667049104

Square Root: 285.74814085134483

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 permutations of [n] avoiding the patterns 2-41-3, 3-14-2, 2-14-3, and 3-41-2. A348351

Indices of primes in sequence defined by A(0) = 59, A(n) = 10·A(n-1) - 81 for n > 0. A101569

Number of (n+2)X(5+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 and no antidiagonal sum 0 and no row sum 2 and no column sum 2. A255225

Greatest common divisor of n and sum of decimal digits of n-th prime. A81652