2290243 has 2 divisors, whose sum is σ = 2290244. Its totient is φ = 2290242.

The previous prime is 2290231. The next prime is 2290259. The reversal of 2290243 is 3420922.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2290243 is a prime.

It is an Ulam number.

2290243 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2290213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145121 + 1145122.

It is an arithmetic number, because the mean of its divisors is an integer number (1145122).

2^2290243 is an apocalyptic number.

2290243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2290243 is an equidigital number, since it uses as much as digits as its factorization.

2290243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 2290243 is about 1513.3548823723. The cubic root of 2290243 is about 131.8136910948.

The spelling of 2290243 in words is "two million, two hundred ninety thousand, two hundred forty-three".