90019522 has 16 divisors (see below), whose sum is σ = 143327232. Its totient is φ = 42256960.

The previous prime is 90019499. The next prime is 90019537. The reversal of 90019522 is 22591009.

It is a super-2 number, since 2×90019522² = 16207028682216968, which contains 22 as substring.

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, 11583 + ... + 17725.

It is an arithmetic number, because the mean of its divisors is an integer number (8957952).

Almost surely, 2^90019522 is an apocalyptic number.

90019522 is a deficient number, since it is larger than the sum of its proper divisors (53307710).

90019522 is a wasteful number, since it uses less digits than its factorization.

90019522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6593.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 90019522 is about 9487.8618244576. The cubic root of 90019522 is about 448.1728745293.

The spelling of 90019522 in words is "ninety million, nineteen thousand, five hundred twenty-two".