521054432 has 12 divisors (see below), whose sum is σ = 1025825976. Its totient is φ = 260527200.

The previous prime is 521054419. The next prime is 521054453. The reversal of 521054432 is 234450125.

It is a happy number.

It is a super-2 number, since 2×521054432² = 542995442213685248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8141444 + ... + 8141507.

It is an arithmetic number, because the mean of its divisors is an integer number (85485498).

Almost surely, 2^521054432 is an apocalyptic number.

It is an amenable number.

521054432 is a deficient number, since it is larger than the sum of its proper divisors (504771544).

521054432 is a wasteful number, since it uses less digits than its factorization.

521054432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16282961 (or 16282953 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 521054432 is about 22826.6167444937. The cubic root of 521054432 is about 804.6883208867.

The spelling of 521054432 in words is "five hundred twenty-one million, fifty-four thousand, four hundred thirty-two".