51317051 has 2 divisors, whose sum is σ = 51317052. Its totient is φ = 51317050.

The previous prime is 51317047. The next prime is 51317069. The reversal of 51317051 is 15071315.

51317051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51317051 - 2² = 51317047 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51317011) 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, 25658525 + 25658526.

It is an arithmetic number, because the mean of its divisors is an integer number (25658526).

Almost surely, 2^51317051 is an apocalyptic number.

51317051 is a deficient number, since it is larger than the sum of its proper divisors (1).

51317051 is an equidigital number, since it uses as much as digits as its factorization.

51317051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 525, while the sum is 23.

The square root of 51317051 is about 7163.5920458943. The cubic root of 51317051 is about 371.6098614366.

Adding to 51317051 its reverse (15071315), we get a palindrome (66388366).

The spelling of 51317051 in words is "fifty-one million, three hundred seventeen thousand, fifty-one".