Properties of the Number 21652

Twenty-One Thousand Six Hundred Fifty-Two

Basics

Value: 21651 → 21652 → 21653

Parity: even

Prime: No

Previous Prime: 21649

Next Prime: 21661

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 5413

Divisors: 1, 2, 4, 5413, 10826, 21652

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101010010010100

Octal: 52224

Duodecimal: 10644

Hexadecimal: 5494

Square: 468809104

Square Root: 147.14618581533128

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 intransitive (or alternating, or Stanley) trees: vertices are [0,n] and for no i<j<k are both (i,j) and (j,k) edges. A7889

Convolution square of A000219. A161870

Numbers that are the sum of eight fourth powers in nine or more ways. A345584

Numbers that are the sum of eight fourth powers in exactly nine ways. A345841

T(n,k)=Number of length n arrays x(i), i=1..n with x(i) in i..i+k and no value appearing more than 1 time. A248944

From expansion of falling factorials. A5492

Solution to the Dancing School Problem with 6 girls and n+6 boys: f(6,n). A79911

Consecutive states of the linear congruential pseudo-random number generator for Smalltalk-80 when started at 1. A384220

Solution to the Dancing School Problem with n girls and n+6 boys: f(n,6). A79925

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 389", based on the 5-celled von Neumann neighborhood. A271596