Properties of the Number 20255

Twenty Thousand Two Hundred Fifty-Five

Basics

Value: 20254 → 20255 → 20256

Parity: odd

Prime: No

Previous Prime: 20249

Next Prime: 20261

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 5 × 4051

Divisors: 1, 5, 4051, 20255

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100111100011111

Octal: 47437

Duodecimal: B87B

Hexadecimal: 4f1f

Square: 410265025

Square Root: 142.32006183247674

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 k such that 19^k - 2 is a prime. A128460

a(n) = ∑_{k=0..floor(n/2)} T(n-k,k), T given by A026769. A26779

Number of integer partitions of n such that every pair of distinct parts has a different product. A325856

Semiprimes in A056108. A113527

Number of n X 3 binary arrays with all 1s connected, all corners 1, and no 1 having more than two 1s adjacent. A163734

Expansion of (1/x) * Series_Reversion( x*(1+x+x³)/(1+x)² ). A366116

Number of n-node unlabeled rooted trees with thinning limbs and root outdegree (branching factor) 10. A244711

Number of integer compositions of n matching both of the dashed patterns 23-1 and 1-32. A375297

Strong pseudoprimes to base 29. A20255