51081743 has 2 divisors, whose sum is σ = 51081744. Its totient is φ = 51081742.

The previous prime is 51081739. The next prime is 51081773. The reversal of 51081743 is 34718015.

51081743 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 51081743 - 2² = 51081739 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51081703) 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, 25540871 + 25540872.

It is an arithmetic number, because the mean of its divisors is an integer number (25540872).

Almost surely, 2^51081743 is an apocalyptic number.

51081743 is a deficient number, since it is larger than the sum of its proper divisors (1).

51081743 is an equidigital number, since it uses as much as digits as its factorization.

51081743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 51081743 is about 7147.1492918506. The cubic root of 51081743 is about 371.0410006924.

Adding to 51081743 its reverse (34718015), we get a palindrome (85799758).

The spelling of 51081743 in words is "fifty-one million, eighty-one thousand, seven hundred forty-three".