90104550 has 24 divisors (see below), whose sum is σ = 223459656. Its totient is φ = 24027840.

The previous prime is 90104549. The next prime is 90104563. The reversal of 90104550 is 5540109.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 90104550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 300199 + ... + 300498.

It is an arithmetic number, because the mean of its divisors is an integer number (9310819).

Almost surely, 2^90104550 is an apocalyptic number.

90104550 is an abundant number, since it is smaller than the sum of its proper divisors (133355106).

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

90104550 is a wasteful number, since it uses less digits than its factorization.

90104550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600712 (or 600707 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 90104550 is about 9492.3416499829. The cubic root of 90104550 is about 448.3139374549.

Adding to 90104550 its reverse (5540109), we get a palindrome (95644659).

The spelling of 90104550 in words is "ninety million, one hundred four thousand, five hundred fifty".