Properties of the Number -509

Five Hundred Nine

Basics

Value: -510 → -509 → -508

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 509

Divisors: 1, 509

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -111111101

Octal: -775

Duodecimal: -365

Hexadecimal: -1fd

Square: 259081

Square Root: 22.561028345356956

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) = -n² + 9·n + 23. A126719

Square array A(n, k) = A329644(prime(n)^k), read by falling antidiagonals: (1,1), (1,2), (2,1), (1,3), (2,2), (3,1), ... A329637

A measure of how close the golden ratio is to rational numbers. A66212

Primes or negative values of primes of the form 8·n² - 298·n + 2113 for n >= 0. A217439

Primes or negative values of primes of the form 8·n² - 326·n + 2659 for n >= 0. A217440

Lower triangular matrix T, read by rows, such that the row sums of Tⁿ form the (2n)-dimensional partition numbers. A96652

Table T(n,k) = 3ⁿ - 2^k read by antidiagonals. A254027

a(0) = 121; for n>0, a(n) = a(n-1) - n + 1. A137517

Inverse binomial transform of A070366. A146321

a(n)= -3a(n-1)-3a(n-2)-2a(n-3), n>3. a(0)=4, a(1)=4, a(2)=-5, a(3)=4. A158935