90945054 has 12 divisors (see below), whose sum is σ = 197047656. Its totient is φ = 30315012.

The previous prime is 90945017. The next prime is 90945091. The reversal of 90945054 is 45054909.

It is an interprime number because it is at equal distance from previous prime (90945017) and next prime (90945091).

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2526234 + ... + 2526269.

It is an arithmetic number, because the mean of its divisors is an integer number (16420638).

Almost surely, 2^90945054 is an apocalyptic number.

90945054 is an abundant number, since it is smaller than the sum of its proper divisors (106102602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90945054 is a wasteful number, since it uses less digits than its factorization.

90945054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5052511 (or 5052508 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 90945054 is about 9536.5116263758. The cubic root of 90945054 is about 449.7035974032.

The spelling of 90945054 in words is "ninety million, nine hundred forty-five thousand, fifty-four".