2117291 has 8 divisors (see below), whose sum is σ = 2343168. Its totient is φ = 1897000.

The previous prime is 2117287. The next prime is 2117293. The reversal of 2117291 is 1927112.

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

It is a cyclic number.

It is not a de Polignac number, because 2117291 - 2² = 2117287 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 (2117293) 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, 575 + ... + 2136.

It is an arithmetic number, because the mean of its divisors is an integer number (292896).

2^2117291 is an apocalyptic number.

2117291 is a deficient number, since it is larger than the sum of its proper divisors (225877).

2117291 is a wasteful number, since it uses less digits than its factorization.

2117291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2793.

The product of its digits is 252, while the sum is 23.

The square root of 2117291 is about 1455.0914060636. The cubic root of 2117291 is about 128.4084244108.

The spelling of 2117291 in words is "two million, one hundred seventeen thousand, two hundred ninety-one".