Properties of the Number -505505

Five Hundred Five Thousand Five Hundred Five

Basics

Value: -505506 → -505505 → -505504

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: Yes

Factorization: 5 × 7 × 11 × 13 × 101

Divisors: 1, 5, 7, 11, 13, 35, 55, 65, 77, 91

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1111011011010100001

Octal: -1733241

Duodecimal: -204655

Hexadecimal: -7b6a1

Square: 255535305025

Square Root: 710.9887481528804

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(1) = 5, a(n) = smallest palindromic multiple of a(n-1) obtained by inserting digits anywhere in a(n-1). A82780

a(1) = 5, a(n) = smallest nontrivial palindromic multiple of a(n-1). a(n) is not equal to a(n-1) or a concatenation of a(n-1) with itself. A83151

a(n) is the number of 3-regular 3-hypergraphs on n labeled vertices. (In a 3-hypergraph, each hyper-edge is a proper 3-set; 3-regular implies that each vertex is in exactly 3 hyperedges.) A110101

Palindromes that are the product of 5 distinct primes. A46395

Palindromes of the form k*(k+8). A28568

Numbers k such that k and k² use only the digits 0, 2, 3 and 5. A136887

Regular triangle read by rows where T(n,k) is the number of k-regular k-uniform hypergraphs spanning n vertices. A322706

Numbers in which each digit equals the sum (mod 10) of the other digits. A226468