90154 has 4 divisors (see below), whose sum is σ = 135234. Its totient is φ = 45076.

The previous prime is 90149. The next prime is 90163. The reversal of 90154 is 45109.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45109 = 79 ⋅571.

It can be written as a sum of positive squares in only one way, i.e., 74529 + 15625 = 273^2 + 125^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22537 + ... + 22540.

2⁹⁰¹⁵⁴ is an apocalyptic number.

90154 is a deficient number, since it is larger than the sum of its proper divisors (45080).

90154 is a wasteful number, since it uses less digits than its factorization.

90154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45079.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 90154 is about 300.2565569642. The cubic root of 90154 is about 44.8395935053.

The spelling of 90154 in words is "ninety thousand, one hundred fifty-four".