522243666 has 48 divisors (see below), whose sum is σ = 1350024480. Its totient is φ = 149211720.

The previous prime is 522243647. The next prime is 522243677. The reversal of 522243666 is 666342225.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 522243666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96040 + ... + 101331.

It is an arithmetic number, because the mean of its divisors is an integer number (28125510).

Almost surely, 2^522243666 is an apocalyptic number.

522243666 is an abundant number, since it is smaller than the sum of its proper divisors (827780814).

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

522243666 is a wasteful number, since it uses less digits than its factorization.

522243666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197396 (or 197383 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 522243666 is about 22852.6511809899. The cubic root of 522243666 is about 805.3000519772.

The spelling of 522243666 in words is "five hundred twenty-two million, two hundred forty-three thousand, six hundred sixty-six".