2255636 has 12 divisors (see below), whose sum is σ = 3958080. Its totient is φ = 1124760.

The previous prime is 2255621. The next prime is 2255639. The reversal of 2255636 is 6365522.

It is a happy number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2255599 and 2255608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2255639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2021 + ... + 2931.

It is an arithmetic number, because the mean of its divisors is an integer number (329840).

2^2255636 is an apocalyptic number.

It is an amenable number.

2255636 is a deficient number, since it is larger than the sum of its proper divisors (1702444).

2255636 is a wasteful number, since it uses less digits than its factorization.

2255636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534 (or 1532 counting only the distinct ones).

The product of its digits is 10800, while the sum is 29.

The square root of 2255636 is about 1501.8774916750. The cubic root of 2255636 is about 131.1463895831.

The spelling of 2255636 in words is "two million, two hundred fifty-five thousand, six hundred thirty-six".