90045535 has 4 divisors (see below), whose sum is σ = 108054648. Its totient is φ = 72036424.

The previous prime is 90045533. The next prime is 90045547. The reversal of 90045535 is 53554009.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90045535 - 2¹ = 90045533 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90045497 and 90045506.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9004549 + ... + 9004558.

It is an arithmetic number, because the mean of its divisors is an integer number (27013662).

Almost surely, 2^90045535 is an apocalyptic number.

90045535 is a deficient number, since it is larger than the sum of its proper divisors (18009113).

90045535 is a wasteful number, since it uses less digits than its factorization.

90045535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18009112.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 90045535 is about 9489.2325822482. The cubic root of 90045535 is about 448.2160399744.

The spelling of 90045535 in words is "ninety million, forty-five thousand, five hundred thirty-five".