Properties of the Number 20253

Twenty Thousand Two Hundred Fifty-Three

Basics

Value: 20252 → 20253 → 20254

Parity: odd

Prime: No

Previous Prime: 20249

Next Prime: 20261

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 3 × 43 × 157

Divisors: 1, 3, 43, 129, 157, 471, 6751, 20253

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100111100011101

Octal: 47435

Duodecimal: B879

Hexadecimal: 4f1d

Square: 410184009

Square Root: 142.31303524273522

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 strict compositions of n with all adjacent parts (x, y) satisfying x <= 2y and y <= 2x. A342342

Prime time numbers on 6-digit clocks: numbers of the form HMMSS where H, MM, SS are primes, H < 24, MM and SS < 60. A295014

a(n) = ∑_k=1..n k^floor((n-k)/k). A344551

a(1) = 7; a(n+1) = a(n)-th composite. A25011

Coefficients of replicable function number 12b. A58490

a(n) is such that the a(n)-th composite number is (n-th prime)². A120389

Trajectory of 13 under map n -> A132948(n). A132946

Number of (w,x,y) with all terms in {0,...,n} and w<x+y and x<y. A212980

Number of partitions of n with up to four distinct kinds of 1. A320691

Number of partitions of n with up to nine distinct kinds of 1. A320696