51761162171 has 2 divisors, whose sum is σ = 51761162172. Its totient is φ = 51761162170.

The previous prime is 51761162143. The next prime is 51761162183. The reversal of 51761162171 is 17126116715.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51761162171 - 2¹⁸ = 51760900027 is a prime.

It is a super-2 number, since 2×51761162171² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51761162671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25880581085 + 25880581086.

It is an arithmetic number, because the mean of its divisors is an integer number (25880581086).

Almost surely, 2^51761162171 is an apocalyptic number.

51761162171 is a deficient number, since it is larger than the sum of its proper divisors (1).

51761162171 is an equidigital number, since it uses as much as digits as its factorization.

51761162171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640, while the sum is 38.

Adding to 51761162171 its reverse (17126116715), we get a palindrome (68887278886).

The spelling of 51761162171 in words is "fifty-one billion, seven hundred sixty-one million, one hundred sixty-two thousand, one hundred seventy-one".