2165271 has 8 divisors (see below), whose sum is σ = 2897664. Its totient is φ = 1438200.

The previous prime is 2165249. The next prime is 2165291. The reversal of 2165271 is 1725612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2165271 - 2⁷ = 2165143 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

2165271 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255 + ... + 2096.

It is an arithmetic number, because the mean of its divisors is an integer number (362208).

2^2165271 is an apocalyptic number.

2165271 is a deficient number, since it is larger than the sum of its proper divisors (732393).

2165271 is a wasteful number, since it uses less digits than its factorization.

2165271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2661.

The product of its digits is 840, while the sum is 24.

The square root of 2165271 is about 1471.4859836234. The cubic root of 2165271 is about 129.3711443692.

The spelling of 2165271 in words is "two million, one hundred sixty-five thousand, two hundred seventy-one".