90575857 has 4 divisors (see below), whose sum is σ = 90697216. Its totient is φ = 90454500.

The previous prime is 90575819. The next prime is 90575873. The reversal of 90575857 is 75857509.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90575857 - 2¹⁹ = 90051569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90575557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59553 + ... + 61054.

It is an arithmetic number, because the mean of its divisors is an integer number (22674304).

Almost surely, 2^90575857 is an apocalyptic number.

It is an amenable number.

90575857 is a deficient number, since it is larger than the sum of its proper divisors (121359).

90575857 is a wasteful number, since it uses less digits than its factorization.

90575857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121358.

The product of its (nonzero) digits is 441000, while the sum is 46.

The square root of 90575857 is about 9517.1349155090. The cubic root of 90575857 is about 449.0942390108.

The spelling of 90575857 in words is "ninety million, five hundred seventy-five thousand, eight hundred fifty-seven".