521335116 has 36 divisors (see below), whose sum is σ = 1366629992. Its totient is φ = 173778048.

The previous prime is 521335109. The next prime is 521335147. The reversal of 521335116 is 611533125.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 521335116.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 267205 + ... + 269148.

Almost surely, 2^521335116 is an apocalyptic number.

It is an amenable number.

521335116 is an abundant number, since it is smaller than the sum of its proper divisors (845294876).

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

521335116 is a wasteful number, since it uses less digits than its factorization.

521335116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536372 (or 536358 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 521335116 is about 22832.7640902279. The cubic root of 521335116 is about 804.8327860191.

The spelling of 521335116 in words is "five hundred twenty-one million, three hundred thirty-five thousand, one hundred sixteen".