51034335281 has 2 divisors, whose sum is σ = 51034335282. Its totient is φ = 51034335280.

The previous prime is 51034335241. The next prime is 51034335307. The reversal of 51034335281 is 18253343015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37050090256 + 13984245025 = 192484^2 + 118255^2 .

It is a cyclic number.

It is not a de Polignac number, because 51034335281 - 2¹⁴ = 51034318897 is a prime.

It is a super-2 number, since 2×51034335281² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51034335241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25517167640 + 25517167641.

It is an arithmetic number, because the mean of its divisors is an integer number (25517167641).

Almost surely, 2^51034335281 is an apocalyptic number.

It is an amenable number.

51034335281 is a deficient number, since it is larger than the sum of its proper divisors (1).

51034335281 is an equidigital number, since it uses as much as digits as its factorization.

51034335281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 51034335281 its reverse (18253343015), we get a palindrome (69287678296).

The spelling of 51034335281 in words is "fifty-one billion, thirty-four million, three hundred thirty-five thousand, two hundred eighty-one".