513315245 has 8 divisors (see below), whose sum is σ = 632626584. Its totient is φ = 399553344.

The previous prime is 513315233. The next prime is 513315263. The reversal of 513315245 is 542513315.

It can be written as a sum of positive squares in 4 ways, for example, as 248472169 + 264843076 = 15763^2 + 16274^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 513315245 - 2⁶ = 513315181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1387154 + ... + 1387523.

It is an arithmetic number, because the mean of its divisors is an integer number (79078323).

Almost surely, 2^513315245 is an apocalyptic number.

It is an amenable number.

513315245 is a deficient number, since it is larger than the sum of its proper divisors (119311339).

513315245 is a wasteful number, since it uses less digits than its factorization.

513315245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2774719.

The product of its digits is 9000, while the sum is 29.

The square root of 513315245 is about 22656.4614403927. The cubic root of 513315245 is about 800.6844377018.

The spelling of 513315245 in words is "five hundred thirteen million, three hundred fifteen thousand, two hundred forty-five".