51712117 has 2 divisors, whose sum is σ = 51712118. Its totient is φ = 51712116.

The previous prime is 51712103. The next prime is 51712121. The reversal of 51712117 is 71121715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46867716 + 4844401 = 6846^2 + 2201^2 .

It is a cyclic number.

It is not a de Polignac number, because 51712117 - 2¹¹ = 51710069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51712091 and 51712100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51710117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25856058 + 25856059.

It is an arithmetic number, because the mean of its divisors is an integer number (25856059).

Almost surely, 2^51712117 is an apocalyptic number.

It is an amenable number.

51712117 is a deficient number, since it is larger than the sum of its proper divisors (1).

51712117 is an equidigital number, since it uses as much as digits as its factorization.

51712117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 490, while the sum is 25.

The square root of 51712117 is about 7191.1137524030. The cubic root of 51712117 is about 372.5610416008.

The spelling of 51712117 in words is "fifty-one million, seven hundred twelve thousand, one hundred seventeen".