Properties of the Number -855

Eight Hundred Fifty-Five

Basics

Value: -856 → -855 → -854

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 × 19

Divisors: 1, 3, 5, 9, 15, 19, 45, 57, 95, 171

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1101010111

Octal: -1527

Duodecimal: -5B3

Hexadecimal: -357

Square: 731025

Square Root: 29.24038303442689

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-x-x^N)/((1-x)(1-x²)(1-x³)...(1-x^N)) for N = 4. A60023

Triangle of coefficients of Chebyshev's S(n,x-3) polynomials (exponents of·in increasing order). A207815

Numerator of Hermite(n, 3/14). A159508

a(n)=n*(a(n-1)-3), a(0)=1. A165814

Expansion of e.g.f. exp(tan(sin(x))). A9238

a(n) = ∑_k=0..n A105595(k)*(-1)^k*A105595(n-k) (interpolated zeros suppressed). A105596

a(n) = nⁿ - A002275(n). A177009

Expansion of ∏_{i>=1, j>=1, k>=1} (1 - x^i·j*k). A319359

Values of n such that L(5) and N(5) are both prime, where L(k) = (n²+n+1)*2^2·k + (2·n+1)*2^k + 1, N(k) = (n²+n+1)*2^k + n. A226925

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where column k is the expansion of B(x)^k, where B(x) is the g.f. of A384943. A384946