522891522 has 48 divisors (see below), whose sum is σ = 1184863680. Its totient is φ = 166342176.

The previous prime is 522891521. The next prime is 522891541. The reversal of 522891522 is 225198225.

522891522 is a `hidden beast` number, since 52 + 2 + 89 + 1 + 522 = 666.

It is not an unprimeable number, because it can be changed into a prime (522891521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 225304 + ... + 227612.

It is an arithmetic number, because the mean of its divisors is an integer number (24684660).

Almost surely, 2^522891522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 522891522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (592431840).

522891522 is an abundant number, since it is smaller than the sum of its proper divisors (661972158).

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

522891522 is a wasteful number, since it uses less digits than its factorization.

522891522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2887 (or 2884 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 522891522 is about 22866.8214231887. The cubic root of 522891522 is about 805.6329124906.

The spelling of 522891522 in words is "five hundred twenty-two million, eight hundred ninety-one thousand, five hundred twenty-two".