5181171171 has 16 divisors (see below), whose sum is σ = 7648733568. Its totient is φ = 3093235200.

The previous prime is 5181171169. The next prime is 5181171217. The reversal of 5181171171 is 1711711815.

It is a happy number.

It is not a de Polignac number, because 5181171171 - 2¹ = 5181171169 is a prime.

It is a super-2 number, since 2×5181171171² = 53689069406403022482, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (5181171971) 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, 1169470 + ... + 1173891.

It is an arithmetic number, because the mean of its divisors is an integer number (478045848).

Almost surely, 2^5181171171 is an apocalyptic number.

5181171171 is a deficient number, since it is larger than the sum of its proper divisors (2467562397).

5181171171 is a wasteful number, since it uses less digits than its factorization.

5181171171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2343442.

The product of its digits is 1960, while the sum is 33.

The square root of 5181171171 is about 71980.3526734900. The cubic root of 5181171171 is about 1730.3846217344.

Adding to 5181171171 its reverse (1711711815), we get a palindrome (6892882986).

The spelling of 5181171171 in words is "five billion, one hundred eighty-one million, one hundred seventy-one thousand, one hundred seventy-one".