513665232 has 40 divisors (see below), whose sum is σ = 1328623296. Its totient is φ = 171008256.

The previous prime is 513665219. The next prime is 513665249. The reversal of 513665232 is 232566315.

It is a super-2 number, since 2×513665232² = 527703941131227648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 513665193 and 513665202.

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, 34893 + ... + 47379.

Almost surely, 2^513665232 is an apocalyptic number.

It is an amenable number.

513665232 is an abundant number, since it is smaller than the sum of its proper divisors (814958064).

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

513665232 is a wasteful number, since it uses less digits than its factorization.

513665232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13355 (or 13349 counting only the distinct ones).

The product of its digits is 32400, while the sum is 33.

The square root of 513665232 is about 22664.1839032426. The cubic root of 513665232 is about 800.8663697490.

The spelling of 513665232 in words is "five hundred thirteen million, six hundred sixty-five thousand, two hundred thirty-two".