2553644 has 24 divisors (see below), whose sum is σ = 4783968. Its totient is φ = 1189760.

The previous prime is 2553637. The next prime is 2553647. The reversal of 2553644 is 4463552.

2553644 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2553647) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3434 + ... + 4110.

It is an arithmetic number, because the mean of its divisors is an integer number (199332).

2^2553644 is an apocalyptic number.

It is an amenable number.

2553644 is a deficient number, since it is larger than the sum of its proper divisors (2230324).

2553644 is a wasteful number, since it uses less digits than its factorization.

2553644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745 (or 743 counting only the distinct ones).

The product of its digits is 14400, while the sum is 29.

The square root of 2553644 is about 1598.0125155955. The cubic root of 2553644 is about 136.6847672503.

The spelling of 2553644 in words is "two million, five hundred fifty-three thousand, six hundred forty-four".