90555 has 8 divisors (see below), whose sum is σ = 144912. Its totient is φ = 48288.

The previous prime is 90547. The next prime is 90583. The reversal of 90555 is 55509.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90555 - 2³ = 90547 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

90555 is a modest number, since divided by 555 gives 90 as remainder.

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, 3004 + ... + 3033.

It is an arithmetic number, because the mean of its divisors is an integer number (18114).

2⁹⁰⁵⁵⁵ is an apocalyptic number.

90555 is a deficient number, since it is larger than the sum of its proper divisors (54357).

90555 is a wasteful number, since it uses less digits than its factorization.

90555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6045.

The product of its (nonzero) digits is 1125, while the sum is 24.

The square root of 90555 is about 300.9235783384. The cubic root of 90555 is about 44.9059765227.

The spelling of 90555 in words is "ninety thousand, five hundred fifty-five".