Properties of the Number -565

Five Hundred Sixty-Five

Basics

Value: -566 → -565 → -564

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 16

Digital Root: 7

Palindrome: Yes

Factorization: 5 × 113

Divisors: 1, 5, 113, 565

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -1000110101

Octal: -1065

Duodecimal: -3B1

Hexadecimal: -235

Square: 319225

Square Root: 23.769728648009426

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

G.f.: ∏_k>=1 1/(1+x^k)^k. A255528

Expansion of exp( ∑_n>=1 -σ(6·n)*xⁿ/n ) in powers of x. A283164

Partial sums of A127511. A127513

First order recursion: a(0)=1; a(n) = σ(1,n) - a(n-1). A83238

a(n+3) = 6·a(n) - 5·a(n+2), a(0) = -1, a(1) = 5, a(2) = -25. A110212

Moebius inversion of a sequence related to powers of 2. A178738

Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of f(i,j)=(i if i=j and 1 otherwise) (A204125). A204126

a(n+1) = a(n) - a(floor(n/2)), with a(0)=0, a(1)=1. A62187

Expansion of f(-x) * f(x⁴, x⁸) / f(-x³)² in powers of·where f(, ) is Ramanujan's general θ function. A263050

G.f. A(x) satisfies: A(x) = 1 + x·A(x) / (1 - x) - x·A(x)². A349015