22190255 has 4 divisors (see below), whose sum is σ = 26628312. Its totient is φ = 17752200.

The previous prime is 22190243. The next prime is 22190257. The reversal of 22190255 is 55209122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55209122 = 2 ⋅27604561.

It is not a de Polignac number, because 22190255 - 2¹⁰ = 22189231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22190257) by changing a digit.

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, 2219021 + ... + 2219030.

It is an arithmetic number, because the mean of its divisors is an integer number (6657078).

Almost surely, 2^22190255 is an apocalyptic number.

22190255 is a deficient number, since it is larger than the sum of its proper divisors (4438057).

22190255 is an equidigital number, since it uses as much as digits as its factorization.

22190255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4438056.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 22190255 is about 4710.6533517125. The cubic root of 22190255 is about 281.0093460753.

Adding to 22190255 its reverse (55209122), we get a palindrome (77399377).

The spelling of 22190255 in words is "twenty-two million, one hundred ninety thousand, two hundred fifty-five".