22351289 has 2 divisors, whose sum is σ = 22351290. Its totient is φ = 22351288.

The previous prime is 22351283. The next prime is 22351313. The reversal of 22351289 is 98215322.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17707264 + 4644025 = 4208^2 + 2155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22351289 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22351283) 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, 11175644 + 11175645.

It is an arithmetic number, because the mean of its divisors is an integer number (11175645).

Almost surely, 2^22351289 is an apocalyptic number.

It is an amenable number.

22351289 is a deficient number, since it is larger than the sum of its proper divisors (1).

22351289 is an equidigital number, since it uses as much as digits as its factorization.

22351289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 22351289 is about 4727.7149871793. The cubic root of 22351289 is about 281.6874670788.

The spelling of 22351289 in words is "twenty-two million, three hundred fifty-one thousand, two hundred eighty-nine".