22244491 has 2 divisors, whose sum is σ = 22244492. Its totient is φ = 22244490.

The previous prime is 22244477. The next prime is 22244503. The reversal of 22244491 is 19444222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22244491 - 2¹³ = 22236299 is a prime.

It is not a weakly prime, because it can be changed into another prime (22244401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11122245 + 11122246.

It is an arithmetic number, because the mean of its divisors is an integer number (11122246).

Almost surely, 2^22244491 is an apocalyptic number.

22244491 is a deficient number, since it is larger than the sum of its proper divisors (1).

22244491 is an equidigital number, since it uses as much as digits as its factorization.

22244491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 28.

The square root of 22244491 is about 4716.4065770457. The cubic root of 22244491 is about 281.2381014884.

The spelling of 22244491 in words is "twenty-two million, two hundred forty-four thousand, four hundred ninety-one".