2055645 has 16 divisors (see below), whose sum is σ = 3654720. Its totient is φ = 1096272.

The previous prime is 2055637. The next prime is 2055649. The reversal of 2055645 is 5465502.

It is not a de Polignac number, because 2055645 - 2³ = 2055637 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2055649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7479 + ... + 7748.

It is an arithmetic number, because the mean of its divisors is an integer number (228420).

2^2055645 is an apocalyptic number.

It is an amenable number.

2055645 is a deficient number, since it is larger than the sum of its proper divisors (1599075).

2055645 is a wasteful number, since it uses less digits than its factorization.

2055645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15241 (or 15235 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 2055645 is about 1433.7520706175. The cubic root of 2055645 is about 127.1499046238.

The spelling of 2055645 in words is "two million, fifty-five thousand, six hundred forty-five".