90265594 has 4 divisors (see below), whose sum is σ = 135398394. Its totient is φ = 45132796.

The previous prime is 90265579. The next prime is 90265633. The reversal of 90265594 is 49556209.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49556209 = 37 ⋅1339357.

It can be written as a sum of positive squares in only one way, i.e., 56776225 + 33489369 = 7535^2 + 5787^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22566397 + ... + 22566400.

Almost surely, 2^90265594 is an apocalyptic number.

90265594 is a deficient number, since it is larger than the sum of its proper divisors (45132800).

90265594 is a wasteful number, since it uses less digits than its factorization.

90265594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45132799.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 90265594 is about 9500.8207013921. The cubic root of 90265594 is about 448.5808692174.

The spelling of 90265594 in words is "ninety million, two hundred sixty-five thousand, five hundred ninety-four".