522140664 has 32 divisors (see below), whose sum is σ = 1362107520. Its totient is φ = 166479456.

The previous prime is 522140557. The next prime is 522140677. The reversal of 522140664 is 466041225.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 472402 + ... + 473505.

It is an arithmetic number, because the mean of its divisors is an integer number (42565860).

Almost surely, 2^522140664 is an apocalyptic number.

It is an amenable number.

522140664 is an abundant number, since it is smaller than the sum of its proper divisors (839966856).

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

522140664 is a wasteful number, since it uses less digits than its factorization.

522140664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945939 (or 945935 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 522140664 is about 22850.3974582500. The cubic root of 522140664 is about 805.2471054472.

Adding to 522140664 its reverse (466041225), we get a palindrome (988181889).

The spelling of 522140664 in words is "five hundred twenty-two million, one hundred forty thousand, six hundred sixty-four".