51001120171 has 2 divisors, whose sum is σ = 51001120172. Its totient is φ = 51001120170.

The previous prime is 51001120169. The next prime is 51001120189. The reversal of 51001120171 is 17102110015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51001120171 - 2¹ = 51001120169 is a prime.

It is a super-2 number, since 2×51001120171² (a number of 22 digits) contains 22 as substring.

Together with 51001120169, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51001150171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25500560085 + 25500560086.

It is an arithmetic number, because the mean of its divisors is an integer number (25500560086).

Almost surely, 2^51001120171 is an apocalyptic number.

51001120171 is a deficient number, since it is larger than the sum of its proper divisors (1).

51001120171 is an equidigital number, since it uses as much as digits as its factorization.

51001120171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70, while the sum is 19.

Adding to 51001120171 its reverse (17102110015), we get a palindrome (68103230186).

The spelling of 51001120171 in words is "fifty-one billion, one million, one hundred twenty thousand, one hundred seventy-one".