90505256 has 16 divisors (see below), whose sum is σ = 174284340. Its totient is φ = 44029440.

The previous prime is 90505243. The next prime is 90505267. The reversal of 90505256 is 65250509.

It can be written as a sum of positive squares in 2 ways, for example, as 76562500 + 13942756 = 8750^2 + 3734^2 .

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

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, 152585 + ... + 153176.

Almost surely, 2^90505256 is an apocalyptic number.

It is an amenable number.

90505256 is a deficient number, since it is larger than the sum of its proper divisors (83779084).

90505256 is a wasteful number, since it uses less digits than its factorization.

90505256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305804 (or 305800 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 90505256 is about 9513.4250404363. The cubic root of 90505256 is about 448.9775237880.

The spelling of 90505256 in words is "ninety million, five hundred five thousand, two hundred fifty-six".