90320545 has 8 divisors (see below), whose sum is σ = 123868224. Its totient is φ = 61934064.

The previous prime is 90320543. The next prime is 90320551. The reversal of 90320545 is 54502309.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90320545 - 2¹ = 90320543 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90320543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1290259 + ... + 1290328.

It is an arithmetic number, because the mean of its divisors is an integer number (15483528).

Almost surely, 2^90320545 is an apocalyptic number.

It is an amenable number.

90320545 is a deficient number, since it is larger than the sum of its proper divisors (33547679).

90320545 is a wasteful number, since it uses less digits than its factorization.

90320545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2580599.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 90320545 is about 9503.7121694630. The cubic root of 90320545 is about 448.6718783011.

The spelling of 90320545 in words is "ninety million, three hundred twenty thousand, five hundred forty-five".