Properties of the Number -361

Three Hundred Sixty-One

Basics

Value: -362 → -361 → -360

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 19 ²

Divisors: 1, 19, 361

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: -101101001

Octal: -551

Duodecimal: -261

Hexadecimal: -169

Square: 130321

Square Root: 19

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

Alternating partial sums of A000217. A83392

Expansion of e.g.f.: exp(-x) / cosh(2·x). A212435

Dirichlet g.f.: 1 / ζ(s-2). A334657

Expansion of ∏_k>=1 (1 + x^k)^λ(k) where λ(k) is the Liouville function, A008836. A118207

Triangle of coefficients of Gaussian polynomials [2n+5,4]_q represented as finite sum of terms (1+q²)^k*q^g-k, where k = 0,1,...,g with g=4n+2. A267484

a(1) = 1, a(2) = -5; a(n) = -n² * ∑_{d∣n, d < n} a(d) / d². A359485

a(1) = 1, a(2) = 3; a(n) = n² * ∑_{d∣n, d < n} (-1)^n/d a(d) / d². A361986

Number triangle read by rows, related to exp(x)/(cos(x) + sin(x)). A117442

Expansion of A(x) = [ ∑_n>=0 (-7)^n*(n-1/2) * (1 + (-7)^2·n+1)/(-6) * x^n*(n+1/2) ]^1/3. A370148

Array read by ascending antidiagonals: A(n, k) = ∑_{j = 0..k} binomial(k, j) * Euler(j, 0) *(2·n)^j. A377666