5188556321 has 4 divisors (see below), whose sum is σ = 5587676052. Its totient is φ = 4789436592.

The previous prime is 5188556227. The next prime is 5188556323. The reversal of 5188556321 is 1236558815.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1236558815 = 5 ⋅247311763.

It can be written as a sum of positive squares in 2 ways, for example, as 3213642721 + 1974913600 = 56689^2 + 44440^2 .

It is a cyclic number.

It is not a de Polignac number, because 5188556321 - 2³⁰ = 4114814497 is a prime.

It is a super-2 number, since 2×5188556321² = 53842233392378110082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5188556323) 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 in 3 ways as a sum of consecutive naturals, for example, 199559846 + ... + 199559871.

It is an arithmetic number, because the mean of its divisors is an integer number (1396919013).

Almost surely, 2^5188556321 is an apocalyptic number.

It is an amenable number.

5188556321 is a deficient number, since it is larger than the sum of its proper divisors (399119731).

5188556321 is a wasteful number, since it uses less digits than its factorization.

5188556321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399119730.

The product of its digits is 288000, while the sum is 44.

The square root of 5188556321 is about 72031.6341686068. The cubic root of 5188556321 is about 1731.2063846554.

The spelling of 5188556321 in words is "five billion, one hundred eighty-eight million, five hundred fifty-six thousand, three hundred twenty-one".