Properties of the Number 21172

Twenty-One Thousand One Hundred Seventy-Two

Basics

Value: 21171 → 21172 → 21173

Parity: even

Prime: No

Previous Prime: 21169

Next Prime: 21179

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 67 × 79

Divisors: 1, 2, 4, 67, 79, 134, 158, 268, 316, 5293

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101001010110100

Octal: 51264

Duodecimal: 10304

Hexadecimal: 52b4

Square: 448253584

Square Root: 145.50601362143078

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

Triangle of counts of s-clusters in n X n (0,1)-matrices for s=0, 1, .... A86266

Number of nX5 0..1 arrays with every element unequal to 0, 1 or 3 king-move adjacent elements, with upper left element zero. A303679

Consecutive states of the linear congruential pseudo-random number generator (1291·s + 4621) mod 21870 when started at s=1. A385337

Decimal expansion of 1/168. A21172