90524985 has 16 divisors (see below), whose sum is σ = 145369536. Its totient is φ = 48103488.

The previous prime is 90524971. The next prime is 90525011. The reversal of 90524985 is 58942509.

It is not a de Polignac number, because 90524985 - 2⁴ = 90524969 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6739 + ... + 15048.

It is an arithmetic number, because the mean of its divisors is an integer number (9085596).

Almost surely, 2^90524985 is an apocalyptic number.

It is an amenable number.

90524985 is a deficient number, since it is larger than the sum of its proper divisors (54844551).

90524985 is a wasteful number, since it uses less digits than its factorization.

90524985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22072.

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 90524985 is about 9514.4618870433. The cubic root of 90524985 is about 449.0101452231.

The spelling of 90524985 in words is "ninety million, five hundred twenty-four thousand, nine hundred eighty-five".