22042455 has 16 divisors (see below), whose sum is σ = 37342944. Its totient is φ = 11064320.

The previous prime is 22042429. The next prime is 22042469. The reversal of 22042455 is 55424022.

It is a happy number.

It is not a de Polignac number, because 22042455 - 2⁸ = 22042199 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 42966 + ... + 43475.

It is an arithmetic number, because the mean of its divisors is an integer number (2333934).

Almost surely, 2^22042455 is an apocalyptic number.

22042455 is a deficient number, since it is larger than the sum of its proper divisors (15300489).

22042455 is a wasteful number, since it uses less digits than its factorization.

22042455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86466.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 22042455 is about 4694.9392967322. The cubic root of 22042455 is about 280.3840605495.

Adding to 22042455 its reverse (55424022), we get a palindrome (77466477).

The spelling of 22042455 in words is "twenty-two million, forty-two thousand, four hundred fifty-five".