90322745 has 4 divisors (see below), whose sum is σ = 108387300. Its totient is φ = 72258192.

The previous prime is 90322711. The next prime is 90322753. The reversal of 90322745 is 54722309.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21631801 + 68690944 = 4651^2 + 8288^2 .

It is a cyclic number.

It is not a de Polignac number, because 90322745 - 2¹² = 90318649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9032270 + ... + 9032279.

It is an arithmetic number, because the mean of its divisors is an integer number (27096825).

Almost surely, 2^90322745 is an apocalyptic number.

It is an amenable number.

90322745 is a deficient number, since it is larger than the sum of its proper divisors (18064555).

90322745 is a wasteful number, since it uses less digits than its factorization.

90322745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18064554.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 90322745 is about 9503.8279130043. The cubic root of 90322745 is about 448.6755211419.

The spelling of 90322745 in words is "ninety million, three hundred twenty-two thousand, seven hundred forty-five".