22243555 has 8 divisors (see below), whose sum is σ = 26968032. Its totient is φ = 17611008.

The previous prime is 22243541. The next prime is 22243579. The reversal of 22243555 is 55534222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22243555 - 2⁹ = 22243043 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 22447 + ... + 23416.

It is an arithmetic number, because the mean of its divisors is an integer number (3371004).

Almost surely, 2^22243555 is an apocalyptic number.

22243555 is a deficient number, since it is larger than the sum of its proper divisors (4724477).

22243555 is an equidigital number, since it uses as much as digits as its factorization.

22243555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45965.

The product of its digits is 12000, while the sum is 28.

The square root of 22243555 is about 4716.3073479153. The cubic root of 22243555 is about 281.2341568030.

Adding to 22243555 its reverse (55534222), we get a palindrome (77777777).

The spelling of 22243555 in words is "twenty-two million, two hundred forty-three thousand, five hundred fifty-five".