51513445303 has 2 divisors, whose sum is σ = 51513445304. Its totient is φ = 51513445302.

The previous prime is 51513445199. The next prime is 51513445307. The reversal of 51513445303 is 30354431515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51513445303 - 2¹⁷ = 51513314231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51513445307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25756722651 + 25756722652.

It is an arithmetic number, because the mean of its divisors is an integer number (25756722652).

Almost surely, 2^51513445303 is an apocalyptic number.

51513445303 is a deficient number, since it is larger than the sum of its proper divisors (1).

51513445303 is an equidigital number, since it uses as much as digits as its factorization.

51513445303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54000, while the sum is 34.

Adding to 51513445303 its reverse (30354431515), we get a palindrome (81867876818).

The spelling of 51513445303 in words is "fifty-one billion, five hundred thirteen million, four hundred forty-five thousand, three hundred three".