90158755 has 4 divisors (see below), whose sum is σ = 108190512. Its totient is φ = 72127000.

The previous prime is 90158753. The next prime is 90158759. The reversal of 90158755 is 55785109.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 90158755 - 2¹ = 90158753 is a prime.

It is a super-2 number, since 2×90158755² = 16257202206300050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90158753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9015871 + ... + 9015880.

It is an arithmetic number, because the mean of its divisors is an integer number (27047628).

Almost surely, 2^90158755 is an apocalyptic number.

90158755 is a deficient number, since it is larger than the sum of its proper divisors (18031757).

90158755 is a wasteful number, since it uses less digits than its factorization.

90158755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18031756.

The product of its (nonzero) digits is 63000, while the sum is 40.

The square root of 90158755 is about 9495.1964171364. The cubic root of 90158755 is about 448.4038181754.

The spelling of 90158755 in words is "ninety million, one hundred fifty-eight thousand, seven hundred fifty-five".