51314917 has 2 divisors, whose sum is σ = 51314918. Its totient is φ = 51314916.

The previous prime is 51314899. The next prime is 51314941. The reversal of 51314917 is 71941315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43441281 + 7873636 = 6591^2 + 2806^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51314917 is a prime.

It is a Chen prime.

It is equal to p_3075169 and since 51314917 and 3075169 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51314987) 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, 25657458 + 25657459.

It is an arithmetic number, because the mean of its divisors is an integer number (25657459).

Almost surely, 2^51314917 is an apocalyptic number.

It is an amenable number.

51314917 is a deficient number, since it is larger than the sum of its proper divisors (1).

51314917 is an equidigital number, since it uses as much as digits as its factorization.

51314917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 31.

The square root of 51314917 is about 7163.4430967238. The cubic root of 51314917 is about 371.6047102804.

The spelling of 51314917 in words is "fifty-one million, three hundred fourteen thousand, nine hundred seventeen".