521125116 has 24 divisors (see below), whose sum is σ = 1224123600. Its totient is φ = 172541952.

The previous prime is 521125063. The next prime is 521125147. The reversal of 521125116 is 611521125.

It is a congruent number.

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, 143941 + ... + 147516.

It is an arithmetic number, because the mean of its divisors is an integer number (51005150).

Almost surely, 2^521125116 is an apocalyptic number.

It is an amenable number.

521125116 is an abundant number, since it is smaller than the sum of its proper divisors (702998484).

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

521125116 is a wasteful number, since it uses less digits than its factorization.

521125116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291613 (or 291611 counting only the distinct ones).

The product of its digits is 600, while the sum is 24.

The square root of 521125116 is about 22828.1649722443. The cubic root of 521125116 is about 804.7247060920.

The spelling of 521125116 in words is "five hundred twenty-one million, one hundred twenty-five thousand, one hundred sixteen".