5171317181 has 2 divisors, whose sum is σ = 5171317182. Its totient is φ = 5171317180.

The previous prime is 5171317147. The next prime is 5171317201. The reversal of 5171317181 is 1817131715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2966545156 + 2204772025 = 54466^2 + 46955^2 .

It is a cyclic number.

It is not a de Polignac number, because 5171317181 - 2⁶ = 5171317117 is a prime.

It is a super-2 number, since 2×5171317181² = 53485042773011573522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5171317141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2585658590 + 2585658591.

It is an arithmetic number, because the mean of its divisors is an integer number (2585658591).

Almost surely, 2^5171317181 is an apocalyptic number.

It is an amenable number.

5171317181 is a deficient number, since it is larger than the sum of its proper divisors (1).

5171317181 is an equidigital number, since it uses as much as digits as its factorization.

5171317181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5880, while the sum is 35.

The square root of 5171317181 is about 71911.8709324128. The cubic root of 5171317181 is about 1729.2869282186.

Adding to 5171317181 its reverse (1817131715), we get a palindrome (6988448896).

The spelling of 5171317181 in words is "five billion, one hundred seventy-one million, three hundred seventeen thousand, one hundred eighty-one".