90392155 has 16 divisors (see below), whose sum is σ = 124210944. Its totient is φ = 61860960.

The previous prime is 90392131. The next prime is 90392161. The reversal of 90392155 is 55129309.

It is a happy number.

It is not a de Polignac number, because 90392155 - 2²¹ = 88295003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90392155.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17724 + ... + 22246.

It is an arithmetic number, because the mean of its divisors is an integer number (7763184).

Almost surely, 2^90392155 is an apocalyptic number.

90392155 is a deficient number, since it is larger than the sum of its proper divisors (33818789).

90392155 is a wasteful number, since it uses less digits than its factorization.

90392155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5106.

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 90392155 is about 9507.4788982148. The cubic root of 90392155 is about 448.7904224107.

The spelling of 90392155 in words is "ninety million, three hundred ninety-two thousand, one hundred fifty-five".