513172912 has 40 divisors (see below), whose sum is σ = 1137427200. Its totient is φ = 219715392.

The previous prime is 513172901. The next prime is 513172927. The reversal of 513172912 is 219271315.

It is a super-2 number, since 2×513172912² = 526692875221119488, which contains 22 as substring.

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, 173139 + ... + 176077.

It is an arithmetic number, because the mean of its divisors is an integer number (28435680).

Almost surely, 2^513172912 is an apocalyptic number.

It is an amenable number.

513172912 is an abundant number, since it is smaller than the sum of its proper divisors (624254288).

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

513172912 is a wasteful number, since it uses less digits than its factorization.

513172912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4513 (or 4507 counting only the distinct ones).

The product of its digits is 3780, while the sum is 31.

The square root of 513172912 is about 22653.3201098647. The cubic root of 513172912 is about 800.6104257737.

The spelling of 513172912 in words is "five hundred thirteen million, one hundred seventy-two thousand, nine hundred twelve".