2255644 has 12 divisors (see below), whose sum is σ = 3958024. Its totient is φ = 1124784.

The previous prime is 2255639. The next prime is 2255657. The reversal of 2255644 is 4465522.

It is a d-powerful number, because it can be written as 2 + 2¹¹ + 5⁵ + 5⁹ + 6⁷ + 4⁵ + 4⁷ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2134 + ... + 3010.

2^2255644 is an apocalyptic number.

It is an amenable number.

2255644 is a deficient number, since it is larger than the sum of its proper divisors (1702380).

2255644 is a wasteful number, since it uses less digits than its factorization.

2255644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524 (or 1522 counting only the distinct ones).

The product of its digits is 9600, while the sum is 28.

The square root of 2255644 is about 1501.8801550057. The cubic root of 2255644 is about 131.1465446273.

The spelling of 2255644 in words is "two million, two hundred fifty-five thousand, six hundred forty-four".