22023455 has 4 divisors (see below), whose sum is σ = 26428152. Its totient is φ = 17618760.

The previous prime is 22023431. The next prime is 22023457. The reversal of 22023455 is 55432022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55432022 = 2 ⋅27716011.

It is not a de Polignac number, because 22023455 - 2¹⁴ = 22007071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22023455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22023457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2202341 + ... + 2202350.

It is an arithmetic number, because the mean of its divisors is an integer number (6607038).

Almost surely, 2^22023455 is an apocalyptic number.

22023455 is a deficient number, since it is larger than the sum of its proper divisors (4404697).

22023455 is an equidigital number, since it uses as much as digits as its factorization.

22023455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4404696.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 22023455 is about 4692.9154051613. The cubic root of 22023455 is about 280.3034762325.

Adding to 22023455 its reverse (55432022), we get a palindrome (77455477).

The spelling of 22023455 in words is "twenty-two million, twenty-three thousand, four hundred fifty-five".