Properties of the Number -165519

One Hundred Sixty-Five Thousand Five Hundred Nineteen

Basics

Value: -165520 → -165519 → -165518

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 53 × 347

Divisors: 1, 3, 9, 53, 159, 347, 477, 1041, 3123, 18391

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101000011010001111

Octal: -503217

Duodecimal: -7B953

Hexadecimal: -2868f

Square: 27396539361

Square Root: 406.840263494163

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

Triangle read by rows: T(n,k) is number of paths from (0,0) to (3n,0) that stay in the first quadrant (but may touch the horizontal axis), consisting of steps u=(2,1), U=(1,2), or d=(1,-1) and having k U=(1,2) steps among the steps leading to the first d step. A108441

G.f.: ∑_n>=0 xⁿ / (1-x²)^2·n+1 * [∑_k=0..n C(n,k)² * x^k] * [∑_k=0..n C(n,k)² * x^2·k]. A246653