22288499 has 2 divisors, whose sum is σ = 22288500. Its totient is φ = 22288498.

The previous prime is 22288451. The next prime is 22288523. The reversal of 22288499 is 99488222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22288499 - 2⁸ = 22288243 is a prime.

It is not a weakly prime, because it can be changed into another prime (22288439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11144249 + 11144250.

It is an arithmetic number, because the mean of its divisors is an integer number (11144250).

Almost surely, 2^22288499 is an apocalyptic number.

22288499 is a deficient number, since it is larger than the sum of its proper divisors (1).

22288499 is an equidigital number, since it uses as much as digits as its factorization.

22288499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 44.

The square root of 22288499 is about 4721.0696881109. The cubic root of 22288499 is about 281.4234443580.

The spelling of 22288499 in words is "twenty-two million, two hundred eighty-eight thousand, four hundred ninety-nine".