51014681 has 2 divisors, whose sum is σ = 51014682. Its totient is φ = 51014680.

The previous prime is 51014657. The next prime is 51014687. The reversal of 51014681 is 18641015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39488656 + 11526025 = 6284^2 + 3395^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51014681 is a prime.

It is a super-2 number, since 2×51014681² = 5204995355063522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51014681.

It is not a weakly prime, because it can be changed into another prime (51014687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25507340 + 25507341.

It is an arithmetic number, because the mean of its divisors is an integer number (25507341).

Almost surely, 2^51014681 is an apocalyptic number.

It is an amenable number.

51014681 is a deficient number, since it is larger than the sum of its proper divisors (1).

51014681 is an equidigital number, since it uses as much as digits as its factorization.

51014681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 51014681 is about 7142.4562301774. The cubic root of 51014681 is about 370.8785574718.

Adding to 51014681 its reverse (18641015), we get a palindrome (69655696).

The spelling of 51014681 in words is "fifty-one million, fourteen thousand, six hundred eighty-one".