521107116 has 24 divisors (see below), whose sum is σ = 1236527040. Its totient is φ = 170758032.

The previous prime is 521107109. The next prime is 521107151. The reversal of 521107116 is 611701125.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367306 + ... + 368721.

It is an arithmetic number, because the mean of its divisors is an integer number (51521960).

Almost surely, 2^521107116 is an apocalyptic number.

It is an amenable number.

521107116 is an abundant number, since it is smaller than the sum of its proper divisors (715419924).

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

521107116 is a wasteful number, since it uses less digits than its factorization.

521107116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736093 (or 736091 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 24.

The square root of 521107116 is about 22827.7707190168. The cubic root of 521107116 is about 804.7154407474.

The spelling of 521107116 in words is "five hundred twenty-one million, one hundred seven thousand, one hundred sixteen".