90054164 has 24 divisors (see below), whose sum is σ = 165476640. Its totient is φ = 42821856.

The previous prime is 90054161. The next prime is 90054203. The reversal of 90054164 is 46145009.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90054161) 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, 1979 + ... + 13565.

It is an arithmetic number, because the mean of its divisors is an integer number (6894860).

Almost surely, 2^90054164 is an apocalyptic number.

It is an amenable number.

90054164 is a deficient number, since it is larger than the sum of its proper divisors (75422476).

90054164 is a wasteful number, since it uses less digits than its factorization.

90054164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11687 (or 11685 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 90054164 is about 9489.6872445829. The cubic root of 90054164 is about 448.2303569259.

The spelling of 90054164 in words is "ninety million, fifty-four thousand, one hundred sixty-four".