51756751 has 2 divisors, whose sum is σ = 51756752. Its totient is φ = 51756750.

The previous prime is 51756713. The next prime is 51756773. The reversal of 51756751 is 15765715.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51756751 - 2⁷ = 51756623 is a prime.

It is a super-2 number, since 2×51756751² = 5357522548152002, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51756751.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51756251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25878375 + 25878376.

It is an arithmetic number, because the mean of its divisors is an integer number (25878376).

Almost surely, 2^51756751 is an apocalyptic number.

51756751 is a deficient number, since it is larger than the sum of its proper divisors (1).

51756751 is an equidigital number, since it uses as much as digits as its factorization.

51756751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36750, while the sum is 37.

The square root of 51756751 is about 7194.2164966034. The cubic root of 51756751 is about 372.6681996425.

The spelling of 51756751 in words is "fifty-one million, seven hundred fifty-six thousand, seven hundred fifty-one".