90557372 has 12 divisors (see below), whose sum is σ = 163940280. Its totient is φ = 43717296.

The previous prime is 90557347. The next prime is 90557381. The reversal of 90557372 is 27375509.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390218 + ... + 390449.

It is an arithmetic number, because the mean of its divisors is an integer number (13661690).

Almost surely, 2^90557372 is an apocalyptic number.

It is an amenable number.

90557372 is a deficient number, since it is larger than the sum of its proper divisors (73382908).

90557372 is a wasteful number, since it uses less digits than its factorization.

90557372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780700 (or 780698 counting only the distinct ones).

The product of its (nonzero) digits is 66150, while the sum is 38.

The square root of 90557372 is about 9516.1637228455. The cubic root of 90557372 is about 449.0636860869.

The spelling of 90557372 in words is "ninety million, five hundred fifty-seven thousand, three hundred seventy-two".