90232201 has 2 divisors, whose sum is σ = 90232202. Its totient is φ = 90232200.

The previous prime is 90232199. The next prime is 90232211. The reversal of 90232201 is 10223209.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63441225 + 26790976 = 7965^2 + 5176^2 .

It is an emirp because it is prime and its reverse (10223209) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90232201 - 2¹ = 90232199 is a prime.

Together with 90232199, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90232211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45116100 + 45116101.

It is an arithmetic number, because the mean of its divisors is an integer number (45116101).

Almost surely, 2^90232201 is an apocalyptic number.

It is an amenable number.

90232201 is a deficient number, since it is larger than the sum of its proper divisors (1).

90232201 is an equidigital number, since it uses as much as digits as its factorization.

90232201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 90232201 is about 9499.0631643336. The cubic root of 90232201 is about 448.5255461504.

The spelling of 90232201 in words is "ninety million, two hundred thirty-two thousand, two hundred one".