Properties of the Number -8505

Five Hundred Five

Basics

Value: -8506 → -8505 → -8504

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ⁵ × 5 × 7

Divisors: 1, 3, 5, 7, 9, 15, 21, 27, 35, 45

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10000100111001

Octal: -20471

Duodecimal: -4B09

Hexadecimal: -2139

Square: 72335025

Square Root: 92.22255689363638

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

a(n) = -a(n-1) - a(n-2) + a(n-3), a(0)=0, a(1)=0, a(2)=1. A57597

Leading coefficients of numerators of Norlund's B_νⁿ polynomials (Nørlund, Tafel 5, p. 459). A290030

Partition array giving in row n, for n >= 1, the coefficients of the Witt symmetric function w_n, multiplied by n!, in terms of the power sum symmetric functions (using partitions in the Abramowitz-Stegun order). A324253

Determinant of n X n matrix of first n² nonzero terms of A000332 binomial coefficients binomial(n,4). A119525

Odd abundant numbers (odd numbers m whose sum of divisors exceeds 2m). A5231

Sextuple factorials, 6-factorials, n!!!!!!, n!6. A85158

Dimensions of representations by Witt vectors. A6973

G.f.: ∏_n>=1 (1 + a(n)*xⁿ/n!) = exp(x). A137852

a(0)=0, a(1)=1, a(2)=1, a(3)=1, a(n) = a(n-3) + a(n-4) for n > 3. A79398

List of different composites in Pascal-like triangles with index of asymmetry y = 2 and index of obliquity z = 0 or z = 1. A141066