Properties of the Number 56145

Fifty-Six Thousand One Hundred Forty-Five

Basics

Value: 56144 → 56145 → 56146

Parity: odd

Prime: No

Previous Prime: 56131

Next Prime: 56149

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 19 × 197

Divisors: 1, 3, 5, 15, 19, 57, 95, 197, 285, 591

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1101101101010001

Octal: 155521

Duodecimal: 285A9

Hexadecimal: db51

Square: 3152261025

Square Root: 236.94936167881946

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

a(1) = 1; a(n) = 5 + n * ∑_k=1..n-1 a(k). A383437

Column 1 of triangle A112682; also equals row sums of A112682 (with offset). A117160

G.f. satisfies: A(x) = ∑_n>=0 xⁿ*A(x)^A001952(n), where A001952(n) = [n*(2+sqrt(2))]. A190271

Composite squarefree integers for which the sum of the squares of their factors is a square. A379780

Number of occurrences of n in A392781. A392816

G.f. satisfies: A(x) = 1 + x·A(x)⁵*A(x·A(x)⁵). A215507

Number of nX4 0..1 arrays with no 1 equal to more than two of its horizontal and vertical neighbors, with the exception of exactly one element. A283199

Palindromic primes in bases 2 and 8. A56145