5517115993 has 4 divisors (see below), whose sum is σ = 5517967540. Its totient is φ = 5516264448.

The previous prime is 5517115979. The next prime is 5517116023. The reversal of 5517115993 is 3995117155.

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 486334809 + 5030781184 = 22053^2 + 70928^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5517115993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5517115943) 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, 415980 + ... + 429037.

It is an arithmetic number, because the mean of its divisors is an integer number (1379491885).

Almost surely, 2^5517115993 is an apocalyptic number.

It is an amenable number.

5517115993 is a deficient number, since it is larger than the sum of its proper divisors (851547).

5517115993 is an equidigital number, since it uses as much as digits as its factorization.

5517115993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851546.

The product of its digits is 212625, while the sum is 46.

The square root of 5517115993 is about 74277.2912335931. The cubic root of 5517115993 is about 1767.0033447620.

The spelling of 5517115993 in words is "five billion, five hundred seventeen million, one hundred fifteen thousand, nine hundred ninety-three".