2255221 has 8 divisors (see below), whose sum is σ = 2328480. Its totient is φ = 2182992.

The previous prime is 2255191. The next prime is 2255233. The reversal of 2255221 is 1225522.

2255221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2255221 - 2⁷ = 2255093 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 (2255251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7551 + ... + 7843.

It is an arithmetic number, because the mean of its divisors is an integer number (291060).

2^2255221 is an apocalyptic number.

It is an amenable number.

2255221 is a deficient number, since it is larger than the sum of its proper divisors (73259).

2255221 is a wasteful number, since it uses less digits than its factorization.

2255221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515.

The product of its digits is 400, while the sum is 19.

The square root of 2255221 is about 1501.7393249163. The cubic root of 2255221 is about 131.1383461621.

The spelling of 2255221 in words is "two million, two hundred fifty-five thousand, two hundred twenty-one".