90975550 has 24 divisors (see below), whose sum is σ = 172819296. Its totient is φ = 35615040.

The previous prime is 90975541. The next prime is 90975569. The reversal of 90975550 is 5557909.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17007 + ... + 21706.

It is an arithmetic number, because the mean of its divisors is an integer number (7200804).

Almost surely, 2^90975550 is an apocalyptic number.

90975550 is a deficient number, since it is larger than the sum of its proper divisors (81843746).

90975550 is a wasteful number, since it uses less digits than its factorization.

90975550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38772 (or 38767 counting only the distinct ones).

The product of its (nonzero) digits is 70875, while the sum is 40.

The square root of 90975550 is about 9538.1103998643. The cubic root of 90975550 is about 449.7538571579.

The spelling of 90975550 in words is "ninety million, nine hundred seventy-five thousand, five hundred fifty".