90158 has 8 divisors (see below), whose sum is σ = 137640. Its totient is φ = 44280.

The previous prime is 90149. The next prime is 90163. The reversal of 90158 is 85109.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

90158 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248 + ... + 491.

It is an arithmetic number, because the mean of its divisors is an integer number (17205).

2⁹⁰¹⁵⁸ is an apocalyptic number.

90158 is a deficient number, since it is larger than the sum of its proper divisors (47482).

90158 is a wasteful number, since it uses less digits than its factorization.

90158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 90158 is about 300.2632178606. The cubic root of 90158 is about 44.8402566510.

Subtracting from 90158 its product of nonzero digits (360), we obtain a palindrome (89798).

It can be divided in two parts, 901 and 58, that added together give a palindrome (959).

The spelling of 90158 in words is "ninety thousand, one hundred fifty-eight".