Properties of the Number -525

Five Hundred Twenty-Five

Basics

Value: -526 → -525 → -524

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 12

Digital Root: 3

Palindrome: Yes

Factorization: 3 × 5 ² × 7

Divisors: 1, 3, 5, 7, 15, 21, 25, 35, 75, 105

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1000001101

Octal: -1015

Duodecimal: -379

Hexadecimal: -20d

Square: 275625

Square Root: 22.9128784747792

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

Lower triangular array T(n,k) generator for group of arrays related to A001147 and A102625. A132382

Nearest integer to n²*sin(n). A274087

Irregular triangle read by rows of normalized Girard-Waring formula (cf. A210258), for m=7 data values. A288245

Triangle of trinomial logarithmic coefficients: A027907(n,k) = ∑_i=0..k T(k,i)*nⁱ/k!. A136590

G.f.: ∑_n>=0 (xⁿ - 1)ⁿ * xⁿ / (1-x)ⁿ⁺¹. A243919

Expansion of ∏_k>=1 (1 - x^2·k)^2·k/(1 - x^2·k-1)^2·k-1. A281781

T(n, k) = [x^k] ((1-x)^2ⁿ + 2^-n*((2ⁿ-1)*(x-1)^2ⁿ + (x+1)^2ⁿ))/2. Irregular triangle read by rows, for n >= 0 and 0 <= k <= 2ⁿ. A340263

a(n) = 1 + ∑_k=2..n (-1)^k * k·a(floor(n/k)). A361982

Triangle T, read by rows, such that the matrix square, T², forms a simple 2-diagonal triangle where [T²](n,n) = 1 and [T²](n+1,n) = 2*(n+1) for n>=0. A113278

Irregular triangle read by rows: coefficients of polynomials related to a family of convolutions of certain central binomial sequences. A142961