2171166 has 16 divisors (see below), whose sum is σ = 4402704. Its totient is φ = 713664.

The previous prime is 2171161. The next prime is 2171203. The reversal of 2171166 is 6611712.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171161) 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, 2041 + ... + 2916.

It is an arithmetic number, because the mean of its divisors is an integer number (275169).

2^2171166 is an apocalyptic number.

2171166 is an abundant number, since it is smaller than the sum of its proper divisors (2231538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2171166 is a wasteful number, since it uses less digits than its factorization.

2171166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5035.

The product of its digits is 504, while the sum is 24.

The square root of 2171166 is about 1473.4876993039. The cubic root of 2171166 is about 129.4884432873.

Adding to 2171166 its reverse (6611712), we get a palindrome (8782878).

The spelling of 2171166 in words is "two million, one hundred seventy-one thousand, one hundred sixty-six".