4543432321 has 2 divisors, whose sum is σ = 4543432322. Its totient is φ = 4543432320.

The previous prime is 4543432307. The next prime is 4543432339. The reversal of 4543432321 is 1232343454.

It is a happy number.

4543432321 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4084615921 + 458816400 = 63911^2 + 21420^2 .

It is a cyclic number.

It is not a de Polignac number, because 4543432321 - 2¹³ = 4543424129 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (4543432381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2271716160 + 2271716161.

It is an arithmetic number, because the mean of its divisors is an integer number (2271716161).

Almost surely, 2^4543432321 is an apocalyptic number.

It is an amenable number.

4543432321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4543432321 is an equidigital number, since it uses as much as digits as its factorization.

4543432321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 31.

The square root of 4543432321 is about 67404.9873599869. The cubic root of 4543432321 is about 1656.2581222699.

Adding to 4543432321 its reverse (1232343454), we get a palindrome (5775775775).

The spelling of 4543432321 in words is "four billion, five hundred forty-three million, four hundred thirty-two thousand, three hundred twenty-one".