90775500 has 96 divisors (see below), whose sum is σ = 268282560. Its totient is φ = 23846400.

The previous prime is 90775493. The next prime is 90775501. The reversal of 90775500 is 557709.

It is not an unprimeable number, because it can be changed into a prime (90775501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109086 + ... + 109914.

It is an arithmetic number, because the mean of its divisors is an integer number (2794610).

Almost surely, 2^90775500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90775500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134141280).

90775500 is an abundant number, since it is smaller than the sum of its proper divisors (177507060).

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

90775500 is a wasteful number, since it uses less digits than its factorization.

90775500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924 (or 912 counting only the distinct ones).

The product of its (nonzero) digits is 11025, while the sum is 33.

The square root of 90775500 is about 9527.6177505188. The cubic root of 90775500 is about 449.4239542756.

The spelling of 90775500 in words is "ninety million, seven hundred seventy-five thousand, five hundred".