522385906 has 16 divisors (see below), whose sum is σ = 919722816. Its totient is φ = 217828656.

The previous prime is 522385889. The next prime is 522385909. The reversal of 522385906 is 609583225.

It is not an unprimeable number, because it can be changed into a prime (522385909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503716 + ... + 504751.

It is an arithmetic number, because the mean of its divisors is an integer number (57482676).

Almost surely, 2^522385906 is an apocalyptic number.

522385906 is a deficient number, since it is larger than the sum of its proper divisors (397336910).

522385906 is a wasteful number, since it uses less digits than its factorization.

522385906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008513.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 522385906 is about 22855.7630806762. The cubic root of 522385906 is about 805.3731567296.

The spelling of 522385906 in words is "five hundred twenty-two million, three hundred eighty-five thousand, nine hundred six".