513251304 has 16 divisors (see below), whose sum is σ = 1283128320. Its totient is φ = 171083760.

The previous prime is 513251281. The next prime is 513251317. The reversal of 513251304 is 403152315.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 21385471 = 513251304 / (5 + 1 + 3 + 2 + 5 + 1 + 3 + 0 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10692712 + ... + 10692759.

It is an arithmetic number, because the mean of its divisors is an integer number (80195520).

Almost surely, 2^513251304 is an apocalyptic number.

It is an amenable number.

513251304 is an abundant number, since it is smaller than the sum of its proper divisors (769877016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

513251304 is a wasteful number, since it uses less digits than its factorization.

513251304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21385480 (or 21385476 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 513251304 is about 22655.0502978916. The cubic root of 513251304 is about 800.6511906280.

The spelling of 513251304 in words is "five hundred thirteen million, two hundred fifty-one thousand, three hundred four".