Properties of the Number 517

Five Hundred Seventeen

Basics

Value: 516 → 517 → 518

Parity: odd

Prime: No

Previous Prime: 509

Next Prime: 521

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 11 × 47

Divisors: 1, 11, 47, 517

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1000000101

Octal: 1005

Duodecimal: 371

Hexadecimal: 205

Square: 267289

Square Root: 22.737634001804146

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

Smith (or joke) numbers: composite numbers k such that sum of digits of k = sum of digits of prime factors of k (counted with multiplicity). A6753

Dispersion of (3+[n·r]), where r=(golden ratio)=(1+sqrt(5))/2 and [ ]=floor, by antidiagonals. A191426

Brilliant numbers: semiprimes (products of two primes, A001358) whose prime factors have the same number of decimal digits. A78972

a(1) = 1 and a(n) = ceiling((∑_k=1..n-1 a(k))/3) for n >= 2. A72493

p-INVERT of the positive integers (A000027), where p(S) = 1 - S - S². A289780

Generalized 10-gonal numbers: m*(4·m - 3) for m = 0, +- 1, +- 2, +- 3, ... A74377

Multiples of 11. A8593

a(0) = 1, a(n) = sum of digits of all previous terms. A4207

Second 10-gonal (or decagonal) numbers: n*(4·n+3). A33954

Numbers whose sum of divisors is a square. A6532