513505472 has 14 divisors (see below), whose sum is σ = 1018987548. Its totient is φ = 256752704.

The previous prime is 513505471. The next prime is 513505477. The reversal of 513505472 is 274505315.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (513505471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4011698 + ... + 4011825.

Almost surely, 2^513505472 is an apocalyptic number.

It is an amenable number.

513505472 is a deficient number, since it is larger than the sum of its proper divisors (505482076).

513505472 is an equidigital number, since it uses as much as digits as its factorization.

513505472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8023535 (or 8023525 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 513505472 is about 22660.6591254535. The cubic root of 513505472 is about 800.7833327369.

The spelling of 513505472 in words is "five hundred thirteen million, five hundred five thousand, four hundred seventy-two".