90890522 has 16 divisors (see below), whose sum is σ = 140956200. Its totient is φ = 43925760.

The previous prime is 90890521. The next prime is 90890531. The reversal of 90890522 is 22509809.

It can be written as a sum of positive squares in 4 ways, for example, as 82428241 + 8462281 = 9079^2 + 2909^2 .

It is a super-2 number, since 2×90890522² = 16522173978864968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90890521) 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 7 ways as a sum of consecutive naturals, for example, 3854 + ... + 14022.

Almost surely, 2^90890522 is an apocalyptic number.

90890522 is a deficient number, since it is larger than the sum of its proper divisors (50065678).

90890522 is a wasteful number, since it uses less digits than its factorization.

90890522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10321.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 90890522 is about 9533.6520809184. The cubic root of 90890522 is about 449.6136964553.

The spelling of 90890522 in words is "ninety million, eight hundred ninety thousand, five hundred twenty-two".