513556225 has 72 divisors (see below), whose sum is σ = 832655040. Its totient is φ = 305130240.

The previous prime is 513556207. The next prime is 513556231. The reversal of 513556225 is 522655315.

It is not a de Polignac number, because 513556225 - 2⁵ = 513556193 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4711471 + ... + 4711579.

Almost surely, 2^513556225 is an apocalyptic number.

It is an amenable number.

513556225 is a deficient number, since it is larger than the sum of its proper divisors (319098815).

513556225 is a wasteful number, since it uses less digits than its factorization.

513556225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267 (or 153 counting only the distinct ones).

The product of its digits is 45000, while the sum is 34.

The square root of 513556225 is about 22661.7789460581. The cubic root of 513556225 is about 800.8097140317.

The spelling of 513556225 in words is "five hundred thirteen million, five hundred fifty-six thousand, two hundred twenty-five".