51315683 has 2 divisors, whose sum is σ = 51315684. Its totient is φ = 51315682.

The previous prime is 51315661. The next prime is 51315721. The reversal of 51315683 is 38651315.

51315683 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 51315683 - 2¹⁸ = 51053539 is a prime.

It is a Chen prime.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (51315613) 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, 25657841 + 25657842.

It is an arithmetic number, because the mean of its divisors is an integer number (25657842).

Almost surely, 2^51315683 is an apocalyptic number.

51315683 is a deficient number, since it is larger than the sum of its proper divisors (1).

51315683 is an equidigital number, since it uses as much as digits as its factorization.

51315683 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 32.

The square root of 51315683 is about 7163.4965624337. The cubic root of 51315683 is about 371.6065593061.

Adding to 51315683 its reverse (38651315), we get a palindrome (89966998).

The spelling of 51315683 in words is "fifty-one million, three hundred fifteen thousand, six hundred eighty-three".