522321696 has 144 divisors (see below), whose sum is σ = 1659176064. Its totient is φ = 160683264.

The previous prime is 522321691. The next prime is 522321703. The reversal of 522321696 is 696123225.

522321696 is a `hidden beast` number, since 522 + 32 + 16 + 96 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×522321696² = 545639908224632832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 522321696.

It is not an unprimeable number, because it can be changed into a prime (522321691) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98505 + ... + 103671.

It is an arithmetic number, because the mean of its divisors is an integer number (11522056).

Almost surely, 2^522321696 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 522321696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (829588032).

522321696 is an abundant number, since it is smaller than the sum of its proper divisors (1136854368).

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

522321696 is a wasteful number, since it uses less digits than its factorization.

522321696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5205 (or 5185 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 522321696 is about 22854.3583589651. The cubic root of 522321696 is about 805.3401574158.

The spelling of 522321696 in words is "five hundred twenty-two million, three hundred twenty-one thousand, six hundred ninety-six".