2243454721 has 2 divisors, whose sum is σ = 2243454722. Its totient is φ = 2243454720.

The previous prime is 2243454709. The next prime is 2243454727. The reversal of 2243454721 is 1274543422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2231239696 + 12215025 = 47236^2 + 3495^2 .

It is a cyclic number.

It is not a de Polignac number, because 2243454721 - 2⁹ = 2243454209 is a prime.

It is not a weakly prime, because it can be changed into another prime (2243454727) 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 as a sum of consecutive naturals, namely, 1121727360 + 1121727361.

It is an arithmetic number, because the mean of its divisors is an integer number (1121727361).

Almost surely, 2^2243454721 is an apocalyptic number.

It is an amenable number.

2243454721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2243454721 is an equidigital number, since it uses as much as digits as its factorization.

2243454721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 34.

The square root of 2243454721 is about 47365.1213552758. The cubic root of 2243454721 is about 1309.0988346022.

The spelling of 2243454721 in words is "two billion, two hundred forty-three million, four hundred fifty-four thousand, seven hundred twenty-one".