522079640 has 16 divisors (see below), whose sum is σ = 1174679280. Its totient is φ = 208831840.

The previous prime is 522079633. The next prime is 522079661. The reversal of 522079640 is 46970225.

It is a self number, because there is not a number n which added to its sum of digits gives 522079640.

It is a congruent number.

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, 6525956 + ... + 6526035.

It is an arithmetic number, because the mean of its divisors is an integer number (73417455).

Almost surely, 2^522079640 is an apocalyptic number.

It is an amenable number.

522079640 is an abundant number, since it is smaller than the sum of its proper divisors (652599640).

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

522079640 is a wasteful number, since it uses less digits than its factorization.

522079640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13052002 (or 13051998 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 522079640 is about 22849.0621251727. The cubic root of 522079640 is about 805.2157337517.

The spelling of 522079640 in words is "five hundred twenty-two million, seventy-nine thousand, six hundred forty".