51360013 has 2 divisors, whose sum is σ = 51360014. Its totient is φ = 51360012.

The previous prime is 51360011. The next prime is 51360019. The reversal of 51360013 is 31006315.

51360013 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 can be written as a sum of positive squares in only one way, i.e., 34892649 + 16467364 = 5907^2 + 4058^2 .

It is a cyclic number.

It is not a de Polignac number, because 51360013 - 2¹ = 51360011 is a prime.

Together with 51360011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51360011) 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, 25680006 + 25680007.

It is an arithmetic number, because the mean of its divisors is an integer number (25680007).

Almost surely, 2^51360013 is an apocalyptic number.

It is an amenable number.

51360013 is a deficient number, since it is larger than the sum of its proper divisors (1).

51360013 is an equidigital number, since it uses as much as digits as its factorization.

51360013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 51360013 is about 7166.5900538541. The cubic root of 51360013 is about 371.7135349030.

Adding to 51360013 its reverse (31006315), we get a palindrome (82366328).

The spelling of 51360013 in words is "fifty-one million, three hundred sixty thousand, thirteen".