521132964 has 36 divisors (see below), whose sum is σ = 1336573392. Its totient is φ = 157918640.

The previous prime is 521132957. The next prime is 521133029. The reversal of 521132964 is 469231125.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 178002 + ... + 180905.

Almost surely, 2^521132964 is an apocalyptic number.

It is an amenable number.

521132964 is an abundant number, since it is smaller than the sum of its proper divisors (815440428).

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

521132964 is a wasteful number, since it uses less digits than its factorization.

521132964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358936 (or 358923 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 521132964 is about 22828.3368645199. The cubic root of 521132964 is about 804.7287457155.

The spelling of 521132964 in words is "five hundred twenty-one million, one hundred thirty-two thousand, nine hundred sixty-four".