2022491 has 2 divisors, whose sum is σ = 2022492. Its totient is φ = 2022490.

The previous prime is 2022487. The next prime is 2022497. The reversal of 2022491 is 1942202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2022491 - 2² = 2022487 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2022497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1011245 + 1011246.

It is an arithmetic number, because the mean of its divisors is an integer number (1011246).

2^2022491 is an apocalyptic number.

2022491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2022491 is an equidigital number, since it uses as much as digits as its factorization.

2022491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 2022491 is about 1422.1431010978. The cubic root of 2022491 is about 126.4626270262.

Adding to 2022491 its reverse (1942202), we get a palindrome (3964693).

The spelling of 2022491 in words is "two million, twenty-two thousand, four hundred ninety-one".