90564575 has 6 divisors (see below), whose sum is σ = 112300104. Its totient is φ = 72451640.

The previous prime is 90564569. The next prime is 90564577. The reversal of 90564575 is 57546509.

It is not a de Polignac number, because 90564575 - 2⁶ = 90564511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90564577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1811267 + ... + 1811316.

It is an arithmetic number, because the mean of its divisors is an integer number (18716684).

Almost surely, 2^90564575 is an apocalyptic number.

90564575 is a deficient number, since it is larger than the sum of its proper divisors (21735529).

90564575 is a wasteful number, since it uses less digits than its factorization.

90564575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3622593 (or 3622588 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 41.

The square root of 90564575 is about 9516.5421766522. The cubic root of 90564575 is about 449.0755920566.

It can be divided in two parts, 9056 and 4575, that added together give a palindrome (13631).

The spelling of 90564575 in words is "ninety million, five hundred sixty-four thousand, five hundred seventy-five".