5516543321 has 4 divisors (see below), whose sum is σ = 5525484852. Its totient is φ = 5507601792.

The previous prime is 5516543311. The next prime is 5516543339. The reversal of 5516543321 is 1233456155.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3021041296 + 2495502025 = 54964^2 + 49955^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5516543321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5516543311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4469840 + ... + 4471073.

It is an arithmetic number, because the mean of its divisors is an integer number (1381371213).

Almost surely, 2^5516543321 is an apocalyptic number.

It is an amenable number.

5516543321 is a deficient number, since it is larger than the sum of its proper divisors (8941531).

5516543321 is an equidigital number, since it uses as much as digits as its factorization.

5516543321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8941530.

The product of its digits is 54000, while the sum is 35.

The square root of 5516543321 is about 74273.4361733722. The cubic root of 5516543321 is about 1766.9422048262.

Adding to 5516543321 its reverse (1233456155), we get a palindrome (6749999476).

The spelling of 5516543321 in words is "five billion, five hundred sixteen million, five hundred forty-three thousand, three hundred twenty-one".