521332125 has 16 divisors (see below), whose sum is σ = 867497280. Its totient is φ = 278043600.

The previous prime is 521332121. The next prime is 521332151. The reversal of 521332125 is 521233125.

It is a happy number.

It is not a de Polignac number, because 521332125 - 2² = 521332121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 521332095 and 521332104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521332121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 694735 + ... + 695484.

It is an arithmetic number, because the mean of its divisors is an integer number (54218580).

Almost surely, 2^521332125 is an apocalyptic number.

It is an amenable number.

521332125 is a deficient number, since it is larger than the sum of its proper divisors (346165155).

521332125 is a wasteful number, since it uses less digits than its factorization.

521332125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390237 (or 1390227 counting only the distinct ones).

The product of its digits is 1800, while the sum is 24.

The square root of 521332125 is about 22832.6985921507. The cubic root of 521332125 is about 804.8312468559.

The spelling of 521332125 in words is "five hundred twenty-one million, three hundred thirty-two thousand, one hundred twenty-five".