522531990 has 24 divisors (see below), whose sum is σ = 1358583408. Its totient is φ = 139341840.

The previous prime is 522531983. The next prime is 522532033. The reversal of 522531990 is 99135225.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2902866 + ... + 2903045.

It is an arithmetic number, because the mean of its divisors is an integer number (56607642).

Almost surely, 2^522531990 is an apocalyptic number.

522531990 is an abundant number, since it is smaller than the sum of its proper divisors (836051418).

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

522531990 is a wasteful number, since it uses less digits than its factorization.

522531990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5805924 (or 5805921 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 522531990 is about 22858.9586376983. The cubic root of 522531990 is about 805.4482233075.

The spelling of 522531990 in words is "five hundred twenty-two million, five hundred thirty-one thousand, nine hundred ninety".