90022291 has 2 divisors, whose sum is σ = 90022292. Its totient is φ = 90022290.

The previous prime is 90022279. The next prime is 90022297. The reversal of 90022291 is 19222009.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90022291 - 2¹¹ = 90020243 is a prime.

It is not a weakly prime, because it can be changed into another prime (90022297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45011145 + 45011146.

It is an arithmetic number, because the mean of its divisors is an integer number (45011146).

Almost surely, 2^90022291 is an apocalyptic number.

90022291 is a deficient number, since it is larger than the sum of its proper divisors (1).

90022291 is an equidigital number, since it uses as much as digits as its factorization.

90022291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 90022291 is about 9488.0077466242. The cubic root of 90022291 is about 448.1774697472.

The spelling of 90022291 in words is "ninety million, twenty-two thousand, two hundred ninety-one".