90045536 has 36 divisors (see below), whose sum is σ = 206223948. Its totient is φ = 38590272.

The previous prime is 90045533. The next prime is 90045547. The reversal of 90045536 is 63554009.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90045533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27146 + ... + 30281.

It is an arithmetic number, because the mean of its divisors is an integer number (5728443).

Almost surely, 2^90045536 is an apocalyptic number.

It is an amenable number.

90045536 is an abundant number, since it is smaller than the sum of its proper divisors (116178412).

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

90045536 is a wasteful number, since it uses less digits than its factorization.

90045536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57451 (or 57436 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 90045536 is about 9489.2326349395. The cubic root of 90045536 is about 448.2160416336.

The spelling of 90045536 in words is "ninety million, forty-five thousand, five hundred thirty-six".