522922218 has 144 divisors (see below), whose sum is σ = 1386413280. Its totient is φ = 130310208.

The previous prime is 522922207. The next prime is 522922219. The reversal of 522922218 is 812229225.

It is not an unprimeable number, because it can be changed into a prime (522922219) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1379553 + ... + 1379931.

It is an arithmetic number, because the mean of its divisors is an integer number (9627870).

Almost surely, 2^522922218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 522922218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (693206640).

522922218 is an abundant number, since it is smaller than the sum of its proper divisors (863491062).

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

522922218 is a wasteful number, since it uses less digits than its factorization.

522922218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449 (or 423 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 522922218 is about 22867.4926041313. The cubic root of 522922218 is about 805.6486768973.

The spelling of 522922218 in words is "five hundred twenty-two million, nine hundred twenty-two thousand, two hundred eighteen".