2291243 has 8 divisors (see below), whose sum is σ = 2472768. Its totient is φ = 2114944.

The previous prime is 2291239. The next prime is 2291257. The reversal of 2291243 is 3421922.

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 2291243 - 2² = 2291239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2291213) 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, 371 + ... + 2172.

It is an arithmetic number, because the mean of its divisors is an integer number (309096).

2^2291243 is an apocalyptic number.

2291243 is a deficient number, since it is larger than the sum of its proper divisors (181525).

2291243 is a wasteful number, since it uses less digits than its factorization.

2291243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2613.

The product of its digits is 864, while the sum is 23.

The square root of 2291243 is about 1513.6852380862. The cubic root of 2291243 is about 131.8328731221.

The spelling of 2291243 in words is "two million, two hundred ninety-one thousand, two hundred forty-three".