90852321 has 24 divisors (see below), whose sum is σ = 141881664. Its totient is φ = 51559200.

The previous prime is 90852317. The next prime is 90852347. The reversal of 90852321 is 12325809.

It is a happy number.

It is not a de Polignac number, because 90852321 - 2² = 90852317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90852361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20151 + ... + 24243.

It is an arithmetic number, because the mean of its divisors is an integer number (5911736).

Almost surely, 2^90852321 is an apocalyptic number.

It is an amenable number.

90852321 is a deficient number, since it is larger than the sum of its proper divisors (51029343).

90852321 is a wasteful number, since it uses less digits than its factorization.

90852321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4261 (or 4254 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 90852321 is about 9531.6483883954. The cubic root of 90852321 is about 449.5506972217.

The spelling of 90852321 in words is "ninety million, eight hundred fifty-two thousand, three hundred twenty-one".