90523000 has 32 divisors (see below), whose sum is σ = 211826160. Its totient is φ = 36208800.

The previous prime is 90522989. The next prime is 90523003. The reversal of 90523000 is 32509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90523003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44262 + ... + 46261.

Almost surely, 2^90523000 is an apocalyptic number.

It is an amenable number.

90523000 is an abundant number, since it is smaller than the sum of its proper divisors (121303160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90523000 is a wasteful number, since it uses less digits than its factorization.

90523000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90544 (or 90530 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 90523000 is about 9514.3575715862. The cubic root of 90523000 is about 449.0068632870.

Adding to 90523000 its reverse (32509), we get a palindrome (90555509).

The spelling of 90523000 in words is "ninety million, five hundred twenty-three thousand".