51112274321 has 2 divisors, whose sum is σ = 51112274322. Its totient is φ = 51112274320.

The previous prime is 51112274287. The next prime is 51112274327. The reversal of 51112274321 is 12347221115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29345403025 + 21766871296 = 171305^2 + 147536^2 .

It is a cyclic number.

It is not a de Polignac number, because 51112274321 - 2¹⁰ = 51112273297 is a prime.

It is a super-2 number, since 2×51112274321² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51112274327) 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, 25556137160 + 25556137161.

It is an arithmetic number, because the mean of its divisors is an integer number (25556137161).

Almost surely, 2^51112274321 is an apocalyptic number.

It is an amenable number.

51112274321 is a deficient number, since it is larger than the sum of its proper divisors (1).

51112274321 is an equidigital number, since it uses as much as digits as its factorization.

51112274321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 29.

Adding to 51112274321 its reverse (12347221115), we get a palindrome (63459495436).

The spelling of 51112274321 in words is "fifty-one billion, one hundred twelve million, two hundred seventy-four thousand, three hundred twenty-one".