521157332 has 24 divisors (see below), whose sum is σ = 932586816. Its totient is φ = 254769408.

The previous prime is 521157331. The next prime is 521157349. The reversal of 521157332 is 233751125.

It is a junction number, because it is equal to n+sod(n) for n = 521157295 and 521157304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521157331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24113 + ... + 40295.

It is an arithmetic number, because the mean of its divisors is an integer number (38857784).

Almost surely, 2^521157332 is an apocalyptic number.

It is an amenable number.

521157332 is a deficient number, since it is larger than the sum of its proper divisors (411429484).

521157332 is a wasteful number, since it uses less digits than its factorization.

521157332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16367 (or 16365 counting only the distinct ones).

The product of its digits is 6300, while the sum is 29.

The square root of 521157332 is about 22828.8705809114. The cubic root of 521157332 is about 804.7412884675.

The spelling of 521157332 in words is "five hundred twenty-one million, one hundred fifty-seven thousand, three hundred thirty-two".