520801388 has 12 divisors (see below), whose sum is σ = 912443112. Its totient is φ = 260103360.

The previous prime is 520801361. The next prime is 520801403. The reversal of 520801388 is 883108025.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70370 + ... + 77417.

It is an arithmetic number, because the mean of its divisors is an integer number (76036926).

Almost surely, 2^520801388 is an apocalyptic number.

It is an amenable number.

520801388 is a deficient number, since it is larger than the sum of its proper divisors (391641724).

520801388 is a wasteful number, since it uses less digits than its factorization.

520801388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148672 (or 148670 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 520801388 is about 22821.0733314627. The cubic root of 520801388 is about 804.5580372989.

The spelling of 520801388 in words is "five hundred twenty million, eight hundred one thousand, three hundred eighty-eight".