2223791 has 4 divisors (see below), whose sum is σ = 2255184. Its totient is φ = 2192400.

The previous prime is 2223773. The next prime is 2223829. The reversal of 2223791 is 1973222.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2223791 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2223791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223701) 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, 15590 + ... + 15731.

It is an arithmetic number, because the mean of its divisors is an integer number (563796).

2^2223791 is an apocalyptic number.

2223791 is a deficient number, since it is larger than the sum of its proper divisors (31393).

2223791 is an equidigital number, since it uses as much as digits as its factorization.

2223791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31392.

The product of its digits is 1512, while the sum is 26.

The square root of 2223791 is about 1491.2380762306. The cubic root of 2223791 is about 130.5262886025.

The spelling of 2223791 in words is "two million, two hundred twenty-three thousand, seven hundred ninety-one".