522157842 has 24 divisors (see below), whose sum is σ = 1132425216. Its totient is φ = 173885976.

The previous prime is 522157841. The next prime is 522157859. The reversal of 522157842 is 248751225.

It is a happy number.

522157842 is a `hidden beast` number, since 522 + 1 + 57 + 84 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 522157797 and 522157806.

It is not an unprimeable number, because it can be changed into a prime (522157841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6223 + ... + 32909.

It is an arithmetic number, because the mean of its divisors is an integer number (47184384).

Almost surely, 2^522157842 is an apocalyptic number.

522157842 is an abundant number, since it is smaller than the sum of its proper divisors (610267374).

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

522157842 is a wasteful number, since it uses less digits than its factorization.

522157842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27782 (or 27779 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 522157842 is about 22850.7733348349. The cubic root of 522157842 is about 805.2559360071.

The spelling of 522157842 in words is "five hundred twenty-two million, one hundred fifty-seven thousand, eight hundred forty-two".