522640312 has 16 divisors (see below), whose sum is σ = 984020400. Its totient is φ = 260234880.

The previous prime is 522640289. The next prime is 522640337. The reversal of 522640312 is 213046225.

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, 133612 + ... + 137467.

It is an arithmetic number, because the mean of its divisors is an integer number (61501275).

Almost surely, 2^522640312 is an apocalyptic number.

It is an amenable number.

522640312 is a deficient number, since it is larger than the sum of its proper divisors (461380088).

522640312 is a wasteful number, since it uses less digits than its factorization.

522640312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271326 (or 271322 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 522640312 is about 22861.3278704453. The cubic root of 522640312 is about 805.5038765089.

Adding to 522640312 its reverse (213046225), we get a palindrome (735686537).

The spelling of 522640312 in words is "five hundred twenty-two million, six hundred forty thousand, three hundred twelve".