22115455 has 16 divisors (see below), whose sum is σ = 27453024. Its totient is φ = 17089920.

The previous prime is 22115447. The next prime is 22115461. The reversal of 22115455 is 55451122.

It is not a de Polignac number, because 22115455 - 2³ = 22115447 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31660 + ... + 32350.

It is an arithmetic number, because the mean of its divisors is an integer number (1715814).

Almost surely, 2^22115455 is an apocalyptic number.

22115455 is a deficient number, since it is larger than the sum of its proper divisors (5337569).

22115455 is a wasteful number, since it uses less digits than its factorization.

22115455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906.

The product of its digits is 2000, while the sum is 25.

The square root of 22115455 is about 4702.7071990504. The cubic root of 22115455 is about 280.6932439355.

Adding to 22115455 its reverse (55451122), we get a palindrome (77566577).

The spelling of 22115455 in words is "twenty-two million, one hundred fifteen thousand, four hundred fifty-five".