521249632 has 24 divisors (see below), whose sum is σ = 1026874800. Its totient is φ = 260456064.

The previous prime is 521249623. The next prime is 521249633. The reversal of 521249632 is 236942125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521249633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55794 + ... + 64462.

It is an arithmetic number, because the mean of its divisors is an integer number (42786450).

Almost surely, 2^521249632 is an apocalyptic number.

It is an amenable number.

521249632 is a deficient number, since it is larger than the sum of its proper divisors (505625168).

521249632 is a wasteful number, since it uses less digits than its factorization.

521249632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10558 (or 10550 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 521249632 is about 22830.8920544073. The cubic root of 521249632 is about 804.7887937867.

The spelling of 521249632 in words is "five hundred twenty-one million, two hundred forty-nine thousand, six hundred thirty-two".