513217204 has 12 divisors (see below), whose sum is σ = 900579904. Its totient is φ = 255908664.

The previous prime is 513217153. The next prime is 513217231. The reversal of 513217204 is 402712315.

It is a happy number.

It is a congruent number.

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, 173334 + ... + 176269.

Almost surely, 2^513217204 is an apocalyptic number.

It is an amenable number.

513217204 is a deficient number, since it is larger than the sum of its proper divisors (387362700).

513217204 is a wasteful number, since it uses less digits than its factorization.

513217204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349974 (or 349972 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 513217204 is about 22654.2976938152. The cubic root of 513217204 is about 800.6334586969.

Adding to 513217204 its reverse (402712315), we get a palindrome (915929519).

The spelling of 513217204 in words is "five hundred thirteen million, two hundred seventeen thousand, two hundred four".