51317351 has 2 divisors, whose sum is σ = 51317352. Its totient is φ = 51317350.

The previous prime is 51317341. The next prime is 51317359. The reversal of 51317351 is 15371315.

51317351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51317351 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51317351.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51317359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25658675 + 25658676.

It is an arithmetic number, because the mean of its divisors is an integer number (25658676).

Almost surely, 2^51317351 is an apocalyptic number.

51317351 is a deficient number, since it is larger than the sum of its proper divisors (1).

51317351 is an equidigital number, since it uses as much as digits as its factorization.

51317351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1575, while the sum is 26.

The square root of 51317351 is about 7163.6129850795. The cubic root of 51317351 is about 371.6105855802.

Adding to 51317351 its reverse (15371315), we get a palindrome (66688666).

The spelling of 51317351 in words is "fifty-one million, three hundred seventeen thousand, three hundred fifty-one".