Properties of the Number -171

One Hundred Seventy-One

Basics

Value: -172 → -171 → -170

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 9

Digital Root: 9

Palindrome: Yes

Factorization: 3 ² × 19

Divisors: 1, 3, 9, 19, 57, 171

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10101011

Octal: -253

Duodecimal: -123

Hexadecimal: -ab

Square: 29241

Square Root: 13.076696830622021

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

Expansion of 1/(1 - x + 4·x²). A106853

a(n) = nearest integer to n² * sin(sqrt(n)). A274088

G.f.: Im((i; x)_inf), where (a; q)_inf is the q-Pochhammer symbol, i = sqrt(-1). A278400

Coefficients in asymptotic expansion of probability that a random pair of elements from the alternating group A_k generates all of A_k. A113869

4th differences of partition numbers A000041. A81094

Expansion of (1-x-x^N)/((1-x)(1-x²)(1-x³)...(1-x^N)) for N = 5. A60024

Expansion of ∑_k>0 x^2·k/(1+x^k)³. A363022

Expansion of (1+x)/(1+x-x³) in powers of x. A176971

Expansion of 1 / (1 + x - x³) in powers of x. A247917

Expansion of ∏_k>=1 (1 - x^k * (1 + x)). A306565