90524565 has 12 divisors (see below), whose sum is σ = 156909324. Its totient is φ = 48279744.

The previous prime is 90524561. The next prime is 90524591. The reversal of 90524565 is 56542509.

90524565 is a `hidden beast` number, since 90 + 5 + 2 + 4 + 565 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 64545156 + 25979409 = 8034^2 + 5097^2 .

It is not a de Polignac number, because 90524565 - 2² = 90524561 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90524561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1005784 + ... + 1005873.

It is an arithmetic number, because the mean of its divisors is an integer number (13075777).

Almost surely, 2^90524565 is an apocalyptic number.

It is an amenable number.

90524565 is a deficient number, since it is larger than the sum of its proper divisors (66384759).

90524565 is a wasteful number, since it uses less digits than its factorization.

90524565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011668 (or 2011665 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 90524565 is about 9514.4398153543. The cubic root of 90524565 is about 449.0094508124.

The spelling of 90524565 in words is "ninety million, five hundred twenty-four thousand, five hundred sixty-five".