2173117 has 4 divisors (see below), whose sum is σ = 2177020. Its totient is φ = 2169216.

The previous prime is 2173111. The next prime is 2173141. The reversal of 2173117 is 7113712.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 682276 + 1490841 = 826^2 + 1221^2 .

It is a cyclic number.

It is not a de Polignac number, because 2173117 - 2¹⁵ = 2140349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 942 + ... + 2287.

It is an arithmetic number, because the mean of its divisors is an integer number (544255).

2^2173117 is an apocalyptic number.

It is an amenable number.

2173117 is a deficient number, since it is larger than the sum of its proper divisors (3903).

2173117 is an equidigital number, since it uses as much as digits as its factorization.

2173117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3902.

The product of its digits is 294, while the sum is 22.

The square root of 2173117 is about 1474.1495853542. The cubic root of 2173117 is about 129.5272175863.

Adding to 2173117 its reverse (7113712), we get a palindrome (9286829).

The spelling of 2173117 in words is "two million, one hundred seventy-three thousand, one hundred seventeen".