90250055 has 8 divisors (see below), whose sum is σ = 123771552. Its totient is φ = 61885728.

The previous prime is 90250051. The next prime is 90250063. The reversal of 90250055 is 55005209.

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

It is a cyclic number.

It is not a de Polignac number, because 90250055 - 2² = 90250051 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 (90250051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1289252 + ... + 1289321.

It is an arithmetic number, because the mean of its divisors is an integer number (15471444).

Almost surely, 2^90250055 is an apocalyptic number.

90250055 is a deficient number, since it is larger than the sum of its proper divisors (33521497).

90250055 is a wasteful number, since it uses less digits than its factorization.

90250055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2578585.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 90250055 is about 9500.0028947364. The cubic root of 90250055 is about 448.5551270424. Note that the first 3 decimals are identical.

The spelling of 90250055 in words is "ninety million, two hundred fifty thousand, fifty-five".