22240055 has 4 divisors (see below), whose sum is σ = 26688072. Its totient is φ = 17792040.

The previous prime is 22240037. The next prime is 22240087. The reversal of 22240055 is 55004222.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-22240055 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2224001 + ... + 2224010.

It is an arithmetic number, because the mean of its divisors is an integer number (6672018).

Almost surely, 2^22240055 is an apocalyptic number.

22240055 is a deficient number, since it is larger than the sum of its proper divisors (4448017).

22240055 is an equidigital number, since it uses as much as digits as its factorization.

22240055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4448016.

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 22240055 is about 4715.9362803159. The cubic root of 22240055 is about 281.2194053963.

Adding to 22240055 its reverse (55004222), we get a palindrome (77244277).

The spelling of 22240055 in words is "twenty-two million, two hundred forty thousand, fifty-five".