4543322321 has 2 divisors, whose sum is σ = 4543322322. Its totient is φ = 4543322320.

The previous prime is 4543322279. The next prime is 4543322383. The reversal of 4543322321 is 1232233454.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4454227600 + 89094721 = 66740^2 + 9439^2 .

It is a cyclic number.

It is not a de Polignac number, because 4543322321 - 2¹⁴ = 4543305937 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (4543324321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2271661160 + 2271661161.

It is an arithmetic number, because the mean of its divisors is an integer number (2271661161).

Almost surely, 2^4543322321 is an apocalyptic number.

It is an amenable number.

4543322321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4543322321 is an equidigital number, since it uses as much as digits as its factorization.

4543322321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 29.

The square root of 4543322321 is about 67404.1713916876. The cubic root of 4543322321 is about 1656.2447557332.

Adding to 4543322321 its reverse (1232233454), we get a palindrome (5775555775).

The spelling of 4543322321 in words is "four billion, five hundred forty-three million, three hundred twenty-two thousand, three hundred twenty-one".