22261255 has 16 divisors (see below), whose sum is σ = 29030400. Its totient is φ = 16325280.

The previous prime is 22261249. The next prime is 22261273. The reversal of 22261255 is 55216222.

It is a happy number.

It is not a de Polignac number, because 22261255 - 2³ = 22261247 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, 835 + ... + 6724.

It is an arithmetic number, because the mean of its divisors is an integer number (1814400).

Almost surely, 2^22261255 is an apocalyptic number.

22261255 is a deficient number, since it is larger than the sum of its proper divisors (6769145).

22261255 is a wasteful number, since it uses less digits than its factorization.

22261255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7614.

The product of its digits is 2400, while the sum is 25.

The square root of 22261255 is about 4718.1834428093. The cubic root of 22261255 is about 281.3087330838.

Adding to 22261255 its reverse (55216222), we get a palindrome (77477477).

It can be divided in two parts, 2226 and 1255, that added together give a square (3481 = 59²).

The spelling of 22261255 in words is "twenty-two million, two hundred sixty-one thousand, two hundred fifty-five".