22256243 has 2 divisors, whose sum is σ = 22256244. Its totient is φ = 22256242.

The previous prime is 22256231. The next prime is 22256251. The reversal of 22256243 is 34265222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22256243 - 2¹² = 22252147 is a prime.

It is not a weakly prime, because it can be changed into another prime (22256293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11128121 + 11128122.

It is an arithmetic number, because the mean of its divisors is an integer number (11128122).

Almost surely, 2^22256243 is an apocalyptic number.

22256243 is a deficient number, since it is larger than the sum of its proper divisors (1).

22256243 is an equidigital number, since it uses as much as digits as its factorization.

22256243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 26.

The square root of 22256243 is about 4717.6522762917. The cubic root of 22256243 is about 281.2876197908.

It can be divided in two parts, 222 and 56243, that added together give a palindrome (56465).

The spelling of 22256243 in words is "twenty-two million, two hundred fifty-six thousand, two hundred forty-three".