513725402 has 8 divisors (see below), whose sum is σ = 770739636. Its totient is φ = 256812192.

The previous prime is 513725389. The next prime is 513725411. The reversal of 513725402 is 204527315.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 480881041 + 32844361 = 21929^2 + 5731^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10913 + ... + 33860.

Almost surely, 2^513725402 is an apocalyptic number.

513725402 is a deficient number, since it is larger than the sum of its proper divisors (257014234).

513725402 is a wasteful number, since it uses less digits than its factorization.

513725402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50512.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 513725402 is about 22665.5112891812. The cubic root of 513725402 is about 800.8976393029.

The spelling of 513725402 in words is "five hundred thirteen million, seven hundred twenty-five thousand, four hundred two".