5500611721 has 16 divisors (see below), whose sum is σ = 6057024768. Its totient is φ = 4994967120.

The previous prime is 5500611719. The next prime is 5500611733. The reversal of 5500611721 is 1271160055.

It is not a de Polignac number, because 5500611721 - 2¹ = 5500611719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5500611721.

It is not an unprimeable number, because it can be changed into a prime (5500611751) 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 15 ways as a sum of consecutive naturals, for example, 1612800 + ... + 1616206.

It is an arithmetic number, because the mean of its divisors is an integer number (378564048).

Almost surely, 2^5500611721 is an apocalyptic number.

It is an amenable number.

5500611721 is a deficient number, since it is larger than the sum of its proper divisors (556413047).

5500611721 is a wasteful number, since it uses less digits than its factorization.

5500611721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4653 (or 4631 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 28.

The square root of 5500611721 is about 74166.1089784276. The cubic root of 5500611721 is about 1765.2396073041.

Adding to 5500611721 its reverse (1271160055), we get a palindrome (6771771776).

The spelling of 5500611721 in words is "five billion, five hundred million, six hundred eleven thousand, seven hundred twenty-one".