90372522 has 16 divisors (see below), whose sum is σ = 180866592. Its totient is φ = 30103920.

The previous prime is 90372517. The next prime is 90372539. The reversal of 90372522 is 22527309.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 90372522.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6708 + ... + 15024.

It is an arithmetic number, because the mean of its divisors is an integer number (11304162).

Almost surely, 2^90372522 is an apocalyptic number.

90372522 is an abundant number, since it is smaller than the sum of its proper divisors (90494070).

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

90372522 is a wasteful number, since it uses less digits than its factorization.

90372522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10133.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 90372522 is about 9506.4463391953. The cubic root of 90372522 is about 448.7579279228.

The spelling of 90372522 in words is "ninety million, three hundred seventy-two thousand, five hundred twenty-two".