522490864 has 80 divisors (see below), whose sum is σ = 1214334976. Its totient is φ = 213062400.

The previous prime is 522490849. The next prime is 522490889. The reversal of 522490864 is 468094225.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210559 + ... + 213025.

Almost surely, 2^522490864 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 522490864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (607167488).

522490864 is an abundant number, since it is smaller than the sum of its proper divisors (691844112).

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

522490864 is a wasteful number, since it uses less digits than its factorization.

522490864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2574 (or 2568 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 522490864 is about 22858.0590602089. The cubic root of 522490864 is about 805.4270917574.

The spelling of 522490864 in words is "five hundred twenty-two million, four hundred ninety thousand, eight hundred sixty-four".