51260761 has 2 divisors, whose sum is σ = 51260762. Its totient is φ = 51260760.

The previous prime is 51260749. The next prime is 51260791. The reversal of 51260761 is 16706215.

51260761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50851161 + 409600 = 7131^2 + 640^2 .

It is a cyclic number.

It is not a de Polignac number, because 51260761 - 2⁷ = 51260633 is a prime.

It is not a weakly prime, because it can be changed into another prime (51260791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25630380 + 25630381.

It is an arithmetic number, because the mean of its divisors is an integer number (25630381).

Almost surely, 2^51260761 is an apocalyptic number.

It is an amenable number.

51260761 is a deficient number, since it is larger than the sum of its proper divisors (1).

51260761 is an equidigital number, since it uses as much as digits as its factorization.

51260761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 51260761 is about 7159.6620730311. The cubic root of 51260761 is about 371.4739379850.

Adding to 51260761 its reverse (16706215), we get a palindrome (67966976).

The spelling of 51260761 in words is "fifty-one million, two hundred sixty thousand, seven hundred sixty-one".