90002201 has 2 divisors, whose sum is σ = 90002202. Its totient is φ = 90002200.

The previous prime is 90002189. The next prime is 90002203. The reversal of 90002201 is 10220009.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89775625 + 226576 = 9475^2 + 476^2 .

It is a cyclic number.

It is not a de Polignac number, because 90002201 - 2⁶ = 90002137 is a prime.

It is a Sophie Germain prime.

Together with 90002203, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (90002203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45001100 + 45001101.

It is an arithmetic number, because the mean of its divisors is an integer number (45001101).

Almost surely, 2^90002201 is an apocalyptic number.

It is an amenable number.

90002201 is a deficient number, since it is larger than the sum of its proper divisors (1).

90002201 is an equidigital number, since it uses as much as digits as its factorization.

90002201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 90002201 is about 9486.9489826814. The cubic root of 90002201 is about 448.1441278007.

The spelling of 90002201 in words is "ninety million, two thousand, two hundred one".