2165144 has 16 divisors (see below), whose sum is σ = 4080120. Its totient is φ = 1077120.

The previous prime is 2165143. The next prime is 2165147. The reversal of 2165144 is 4415612.

2165144 is nontrivially palindromic in base 7.

2165144 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1367 + ... + 2489.

2^2165144 is an apocalyptic number.

It is an amenable number.

2165144 is a deficient number, since it is larger than the sum of its proper divisors (1914976).

2165144 is a wasteful number, since it uses less digits than its factorization.

2165144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370 (or 1366 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 2165144 is about 1471.4428293345. The cubic root of 2165144 is about 129.3686149773.

The spelling of 2165144 in words is "two million, one hundred sixty-five thousand, one hundred forty-four".