Properties of the Number -2161

One Hundred Sixty-One

Basics

Value: -2162 → -2161 → -2160

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 2161

Divisors: 1, 2161

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100001110001

Octal: -4161

Duodecimal: -1301

Hexadecimal: -871

Square: 4669921

Square Root: 46.486557196677836

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

Row sums of a number triangle related to the Pell numbers. A110331

Inverted (definition in A075193) generalized tribonacci numbers A001644. A75298

Irregular triangle read by rows: row n gives numerators of coefficients of polynomials arising from Chebyshev quadrature. A324123

Abundance values of numbers whose abundance is (+-1) times a prime. A88006

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 307", based on the 5-celled von Neumann neighborhood. A271167

a(n) = n + (n+1)². A28387

Primes p such that the decimal expansion of its base-9 conversion is also prime. A65727

Number of n-stacks with strictly receding walls, or the number of Type A partitions of n in the sense of Auluck (1951). A1522

Primes of the form x²+Ny², with N=102. A139643

Primes of the form x² + 24·y². A107008