22044455 has 4 divisors (see below), whose sum is σ = 26453352. Its totient is φ = 17635560.

The previous prime is 22044443. The next prime is 22044469. The reversal of 22044455 is 55444022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55444022 = 2 ⋅27722011.

It is not a de Polignac number, because 22044455 - 2⁴ = 22044439 is a prime.

It is a Duffinian number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 2204441 + ... + 2204450.

It is an arithmetic number, because the mean of its divisors is an integer number (6613338).

Almost surely, 2^22044455 is an apocalyptic number.

22044455 is a deficient number, since it is larger than the sum of its proper divisors (4408897).

22044455 is an equidigital number, since it uses as much as digits as its factorization.

22044455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4408896.

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 22044455 is about 4695.1522872001. The cubic root of 22044455 is about 280.3925404150.

Adding to 22044455 its reverse (55444022), we get a palindrome (77488477).

The spelling of 22044455 in words is "twenty-two million, forty-four thousand, four hundred fifty-five".