22142255 has 8 divisors (see below), whose sum is σ = 27219024. Its totient is φ = 17281600.

The previous prime is 22142231. The next prime is 22142257. The reversal of 22142255 is 55224122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22142255 - 2¹² = 22138159 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 22142255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22142257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53801 + ... + 54210.

It is an arithmetic number, because the mean of its divisors is an integer number (3402378).

Almost surely, 2^22142255 is an apocalyptic number.

22142255 is a deficient number, since it is larger than the sum of its proper divisors (5076769).

22142255 is a wasteful number, since it uses less digits than its factorization.

22142255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108057.

The product of its digits is 1600, while the sum is 23.

The square root of 22142255 is about 4705.5557588876. Note that the first 3 decimals coincide. The cubic root of 22142255 is about 280.8065816037.

Adding to 22142255 its reverse (55224122), we get a palindrome (77366377).

The spelling of 22142255 in words is "twenty-two million, one hundred forty-two thousand, two hundred fifty-five".