2165516 has 12 divisors (see below), whose sum is σ = 3805032. Its totient is φ = 1078368.

The previous prime is 2165483. The next prime is 2165521. The reversal of 2165516 is 6155612.

2165516 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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, 176 + ... + 2088.

It is an arithmetic number, because the mean of its divisors is an integer number (317086).

2^2165516 is an apocalyptic number.

It is an amenable number.

2165516 is a deficient number, since it is larger than the sum of its proper divisors (1639516).

2165516 is a wasteful number, since it uses less digits than its factorization.

2165516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200 (or 2198 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 2165516 is about 1471.5692304476. The cubic root of 2165516 is about 129.3760236253.

The spelling of 2165516 in words is "two million, one hundred sixty-five thousand, five hundred sixteen".