2291117 has 4 divisors (see below), whose sum is σ = 2365056. Its totient is φ = 2217180.

The previous prime is 2291063. The next prime is 2291119. The reversal of 2291117 is 7111922.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2291117 - 2⁸ = 2290861 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2291092 and 2291101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2291119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36923 + ... + 36984.

It is an arithmetic number, because the mean of its divisors is an integer number (591264).

2^2291117 is an apocalyptic number.

It is an amenable number.

2291117 is a deficient number, since it is larger than the sum of its proper divisors (73939).

2291117 is an equidigital number, since it uses as much as digits as its factorization.

2291117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73938.

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

The square root of 2291117 is about 1513.6436172362. The cubic root of 2291117 is about 131.8304564940.

The spelling of 2291117 in words is "two million, two hundred ninety-one thousand, one hundred seventeen".