522422220 has 24 divisors (see below), whose sum is σ = 1462782384. Its totient is φ = 139312576.

The previous prime is 522422191. The next prime is 522422273. The reversal of 522422220 is 22224225.

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, 4353459 + ... + 4353578.

It is an arithmetic number, because the mean of its divisors is an integer number (60949266).

Almost surely, 2^522422220 is an apocalyptic number.

It is an amenable number.

522422220 is an abundant number, since it is smaller than the sum of its proper divisors (940360164).

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

522422220 is a wasteful number, since it uses less digits than its factorization.

522422220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8707049 (or 8707047 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 522422220 is about 22856.5574835757. The cubic root of 522422220 is about 805.3918183122.

Adding to 522422220 its reverse (22224225), we get a palindrome (544646445).

The spelling of 522422220 in words is "five hundred twenty-two million, four hundred twenty-two thousand, two hundred twenty".