522539664 has 80 divisors (see below), whose sum is σ = 1381072320. Its totient is φ = 170196480.

The previous prime is 522539651. The next prime is 522539671. The reversal of 522539664 is 466935225.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 523614 + ... + 524610.

It is an arithmetic number, because the mean of its divisors is an integer number (17263404).

Almost surely, 2^522539664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 522539664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (690536160).

522539664 is an abundant number, since it is smaller than the sum of its proper divisors (858532656).

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

522539664 is a wasteful number, since it uses less digits than its factorization.

522539664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248 (or 1242 counting only the distinct ones).

The product of its digits is 388800, while the sum is 42.

The square root of 522539664 is about 22859.1264924975. The cubic root of 522539664 is about 805.4521662746.

The spelling of 522539664 in words is "five hundred twenty-two million, five hundred thirty-nine thousand, six hundred sixty-four".