90538055 has 4 divisors (see below), whose sum is σ = 108645672. Its totient is φ = 72430440.

The previous prime is 90538003. The next prime is 90538057. The reversal of 90538055 is 55083509.

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

It is not a de Polignac number, because 90538055 - 2⁶ = 90537991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90538057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9053801 + ... + 9053810.

It is an arithmetic number, because the mean of its divisors is an integer number (27161418).

Almost surely, 2^90538055 is an apocalyptic number.

90538055 is a deficient number, since it is larger than the sum of its proper divisors (18107617).

90538055 is a wasteful number, since it uses less digits than its factorization.

90538055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18107616.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 90538055 is about 9515.1487113970. The cubic root of 90538055 is about 449.0317535492.

The spelling of 90538055 in words is "ninety million, five hundred thirty-eight thousand, fifty-five".