51303013 has 16 divisors (see below), whose sum is σ = 54340272. Its totient is φ = 48384000.

The previous prime is 51302989. The next prime is 51303061. The reversal of 51303013 is 31030315.

51303013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 10125124 + 41177889 = 3182^2 + 6417^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51303013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51303113) 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 in 15 ways as a sum of consecutive naturals, for example, 182433 + ... + 182713.

It is an arithmetic number, because the mean of its divisors is an integer number (3396267).

Almost surely, 2^51303013 is an apocalyptic number.

It is an amenable number.

51303013 is a deficient number, since it is larger than the sum of its proper divisors (3037259).

51303013 is a wasteful number, since it uses less digits than its factorization.

51303013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456.

The product of its (nonzero) digits is 135, while the sum is 16.

The square root of 51303013 is about 7162.6121631706. The cubic root of 51303013 is about 371.5759731878.

Adding to 51303013 its reverse (31030315), we get a palindrome (82333328).

The spelling of 51303013 in words is "fifty-one million, three hundred three thousand, thirteen".