Properties of the Number 20523

Twenty Thousand Five Hundred Twenty-Three

Basics

Value: 20522 → 20523 → 20524

Parity: odd

Prime: No

Previous Prime: 20521

Next Prime: 20533

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 3 × 6841

Divisors: 1, 3, 6841, 20523

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101000000101011

Octal: 50053

Duodecimal: BA63

Hexadecimal: 502b

Square: 421193529

Square Root: 143.25850760077043

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

Numbers of the form HMMSS with primes H < 24 and MM, SS < 60, for which the number of seconds after midnight, 3600·H+60·MM+SS, is also prime. A295011

Three-quadrant Ferrers graphs that partition n. A59776

Number of subsets of {1..n} whose elements have the same number of divisors. A339514

Numbers k such that prime(k) + 1, ..., prime(k + 5) + 1 have the same number of prime divisors (with multiplicity). A255193

Consecutive states of the linear congruential pseudo-random number generator (7200·s + 1) mod 23⁴ when started at s=1. A383162

a(n) = 3rd Euler polynomial evaluated at 2ⁿ and multiplied by 4. A20523

G.f. satisfies: A(x) = 1 + x·A(x·A(x·A(x·A(x*...x·A(x*...)ⁿ...)⁴)³)²)¹. A190633