1255644 has 36 divisors (see below), whose sum is σ = 3419416. Its totient is φ = 386208.

The previous prime is 1255633. The next prime is 1255651. The reversal of 1255644 is 4465521.

1255644 is a `hidden beast` number, since 12 + 5 + 5 + 644 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 874 + ... + 1809.

2^1255644 is an apocalyptic number.

It is an amenable number.

1255644 is an abundant number, since it is smaller than the sum of its proper divisors (2163772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1255644 is a wasteful number, since it uses less digits than its factorization.

1255644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2706 (or 2701 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 1255644 is about 1120.5552195229. Note that the first 3 decimals coincide. The cubic root of 1255644 is about 107.8836194897.

The spelling of 1255644 in words is "one million, two hundred fifty-five thousand, six hundred forty-four".