2165075 has 12 divisors (see below), whose sum is σ = 2929128. Its totient is φ = 1574400.

The previous prime is 2165063. The next prime is 2165077. The reversal of 2165075 is 5705612.

It is not a de Polignac number, because 2165075 - 2¹⁸ = 1902931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2165077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3662 + ... + 4211.

It is an arithmetic number, because the mean of its divisors is an integer number (244094).

2^2165075 is an apocalyptic number.

2165075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2165075 is a deficient number, since it is larger than the sum of its proper divisors (764053).

2165075 is a wasteful number, since it uses less digits than its factorization.

2165075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7894 (or 7889 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 2165075 is about 1471.4193827730. The cubic root of 2165075 is about 129.3672406994.

The spelling of 2165075 in words is "two million, one hundred sixty-five thousand, seventy-five".