Properties of the Number -285121

Two Hundred Eighty-Five Thousand One Hundred Twenty-One

Basics

Value: -285122 → -285121 → -285120

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 285121

Divisors: 1, 285121

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1000101100111000001

Octal: -1054701

Duodecimal: -119001

Hexadecimal: -459c1

Square: 81293984641

Square Root: 533.9672274587646

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 permutations satisfying -k <= p(i)-i <= r and p(i)-i not in I, i=1..n, with k=1, r=4, I={1,2}. A79972

Primes with 34 as smallest positive primitive root. A61737

Expansion of g.f. x*(1 - x)*(1 + x)/((x² + 3·x + 1)*(x² - 4·x + 1)). A171067

Primes p such that p = 2*φ(σ((p-1)/2))+1. A260476

Numbers k such that k = 2*φ(σ((k-1)/2)) + 1. A266165