51343651 has 2 divisors, whose sum is σ = 51343652. Its totient is φ = 51343650.

The previous prime is 51343637. The next prime is 51343711. The reversal of 51343651 is 15634315.

51343651 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 is a cyclic number.

It is not a de Polignac number, because 51343651 - 2⁹ = 51343139 is a prime.

It is not a weakly prime, because it can be changed into another prime (51343631) 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, 25671825 + 25671826.

It is an arithmetic number, because the mean of its divisors is an integer number (25671826).

Almost surely, 2^51343651 is an apocalyptic number.

51343651 is a deficient number, since it is larger than the sum of its proper divisors (1).

51343651 is an equidigital number, since it uses as much as digits as its factorization.

51343651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 28.

The square root of 51343651 is about 7165.4484158355. The cubic root of 51343651 is about 371.6740578697.

Adding to 51343651 its reverse (15634315), we get a palindrome (66977966).

The spelling of 51343651 in words is "fifty-one million, three hundred forty-three thousand, six hundred fifty-one".