90115 has 8 divisors (see below), whose sum is σ = 110160. Its totient is φ = 70752.

The previous prime is 90107. The next prime is 90121. The reversal of 90115 is 51109.

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

It is not a de Polignac number, because 90115 - 2³ = 90107 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201 + ... + 469.

It is an arithmetic number, because the mean of its divisors is an integer number (13770).

2⁹⁰¹¹⁵ is an apocalyptic number.

90115 is a deficient number, since it is larger than the sum of its proper divisors (20045).

90115 is a wasteful number, since it uses less digits than its factorization.

90115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341.

The product of its (nonzero) digits is 45, while the sum is 16.

The square root of 90115 is about 300.1916054789. The cubic root of 90115 is about 44.8331268062.

The spelling of 90115 in words is "ninety thousand, one hundred fifteen".