22145743 has 2 divisors, whose sum is σ = 22145744. Its totient is φ = 22145742.

The previous prime is 22145723. The next prime is 22145759. The reversal of 22145743 is 34754122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22145743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22145723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11072871 + 11072872.

It is an arithmetic number, because the mean of its divisors is an integer number (11072872).

Almost surely, 2^22145743 is an apocalyptic number.

22145743 is a deficient number, since it is larger than the sum of its proper divisors (1).

22145743 is an equidigital number, since it uses as much as digits as its factorization.

22145743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 28.

The square root of 22145743 is about 4705.9263700147. The cubic root of 22145743 is about 280.8213256897.

Adding to 22145743 its reverse (34754122), we get a palindrome (56899865).

The spelling of 22145743 in words is "twenty-two million, one hundred forty-five thousand, seven hundred forty-three".