Properties of the Number -6161

One Hundred Sixty-One

Basics

Value: -6162 → -6161 → -6160

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 61 × 101

Divisors: 1, 61, 101, 6161

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1100000010001

Octal: -14021

Duodecimal: -3695

Hexadecimal: -1811

Square: 37957921

Square Root: 78.49203781276162

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

Somos-5 sequence: a(n) = (a(n-1) * a(n-4) + a(n-2) * a(n-3)) / a(n-5), with a(0) = a(1) = a(2) = a(3) = a(4) = 1. A6721

a(n) = 8·n² - 4·n + 1. A80856

a(n) = 4·n² - 6·n + 1. A125202

Number T(n,k) of sets of exactly k nonempty words with a total of n letters over n-ary alphabet such that within each prefix of a word every letter of the alphabet is at least as frequent as the subsequent alphabet letter; triangle T(n,k), n>=0, read by rows. A293815

Multiplicative permutation of integers: a(n) = A234840(A235199(n)). A234744

Numbers using only digits 1 and 6. A284293

a(n) = n⁴/2 - n³ + 3·n²/2 - n + 1 = (n² + 1)*(n² - 2·n + 2)/2. A58919

Hypotenuses of primitive Pythagorean triples in A195574 and A195575. A195576

Numbers whose consecutive digits differ by 5. A48407

Expansion of ∏_k>=1 1/(1 - x^2·k+5)^k. A263395