2117117 has 4 divisors (see below), whose sum is σ = 2168796. Its totient is φ = 2065440.

The previous prime is 2117099. The next prime is 2117119. The reversal of 2117117 is 7117112.

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 337561 + 1779556 = 581^2 + 1334^2 .

It is a cyclic number.

It is not a de Polignac number, because 2117117 - 2⁶ = 2117053 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 (2117119) 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, 25778 + ... + 25859.

It is an arithmetic number, because the mean of its divisors is an integer number (542199).

2^2117117 is an apocalyptic number.

It is an amenable number.

2117117 is a deficient number, since it is larger than the sum of its proper divisors (51679).

2117117 is an equidigital number, since it uses as much as digits as its factorization.

2117117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51678.

The product of its digits is 98, while the sum is 20.

The square root of 2117117 is about 1455.0316147768. The cubic root of 2117117 is about 128.4049067589.

The spelling of 2117117 in words is "two million, one hundred seventeen thousand, one hundred seventeen".