4445534321 has 2 divisors, whose sum is σ = 4445534322. Its totient is φ = 4445534320.

The previous prime is 4445534299. The next prime is 4445534341. The reversal of 4445534321 is 1234355444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3713074225 + 732460096 = 60935^2 + 27064^2 .

It is a cyclic number.

It is not a de Polignac number, because 4445534321 - 2⁶ = 4445534257 is a prime.

It is not a weakly prime, because it can be changed into another prime (4445534341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2222767160 + 2222767161.

It is an arithmetic number, because the mean of its divisors is an integer number (2222767161).

Almost surely, 2^4445534321 is an apocalyptic number.

It is an amenable number.

4445534321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4445534321 is an equidigital number, since it uses as much as digits as its factorization.

4445534321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 115200, while the sum is 35.

The square root of 4445534321 is about 66674.8402397786. The cubic root of 4445534321 is about 1644.2757652391.

Adding to 4445534321 its reverse (1234355444), we get a palindrome (5679889765).

The spelling of 4445534321 in words is "four billion, four hundred forty-five million, five hundred thirty-four thousand, three hundred twenty-one".