90045506 has 16 divisors (see below), whose sum is σ = 141459264. Its totient is φ = 42906864.

The previous prime is 90045491. The next prime is 90045517. The reversal of 90045506 is 60554009.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9560 + ... + 16476.

It is an arithmetic number, because the mean of its divisors is an integer number (8841204).

Almost surely, 2^90045506 is an apocalyptic number.

90045506 is a deficient number, since it is larger than the sum of its proper divisors (51413758).

90045506 is a wasteful number, since it uses less digits than its factorization.

90045506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7225.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 90045506 is about 9489.2310542003. The cubic root of 90045506 is about 448.2159918570.

The spelling of 90045506 in words is "ninety million, forty-five thousand, five hundred six".