51060033721 has 2 divisors, whose sum is σ = 51060033722. Its totient is φ = 51060033720.

The previous prime is 51060033719. The next prime is 51060033733. The reversal of 51060033721 is 12733006015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28811328121 + 22248705600 = 169739^2 + 149160^2 .

It is a cyclic number.

It is not a de Polignac number, because 51060033721 - 2¹ = 51060033719 is a prime.

Together with 51060033719, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 51060033721.

It is not a weakly prime, because it can be changed into another prime (51060013721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25530016860 + 25530016861.

It is an arithmetic number, because the mean of its divisors is an integer number (25530016861).

Almost surely, 2^51060033721 is an apocalyptic number.

It is an amenable number.

51060033721 is a deficient number, since it is larger than the sum of its proper divisors (1).

51060033721 is an equidigital number, since it uses as much as digits as its factorization.

51060033721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 28.

Adding to 51060033721 its reverse (12733006015), we get a palindrome (63793039736).

The spelling of 51060033721 in words is "fifty-one billion, sixty million, thirty-three thousand, seven hundred twenty-one".