22331255 has 4 divisors (see below), whose sum is σ = 26797512. Its totient is φ = 17865000.

The previous prime is 22331249. The next prime is 22331263. The reversal of 22331255 is 55213322.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 22331255 - 2¹⁴ = 22314871 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 22331255.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2233121 + ... + 2233130.

It is an arithmetic number, because the mean of its divisors is an integer number (6699378).

Almost surely, 2^22331255 is an apocalyptic number.

22331255 is a deficient number, since it is larger than the sum of its proper divisors (4466257).

22331255 is an equidigital number, since it uses as much as digits as its factorization.

22331255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4466256.

The product of its digits is 1800, while the sum is 23.

The square root of 22331255 is about 4725.5957296409. The cubic root of 22331255 is about 281.6032808284.

Adding to 22331255 its reverse (55213322), we get a palindrome (77544577).

The spelling of 22331255 in words is "twenty-two million, three hundred thirty-one thousand, two hundred fifty-five".