51081733 has 2 divisors, whose sum is σ = 51081734. Its totient is φ = 51081732.

The previous prime is 51081727. The next prime is 51081739. The reversal of 51081733 is 33718015.

It is a balanced prime because it is at equal distance from previous prime (51081727) and next prime (51081739).

It can be written as a sum of positive squares in only one way, i.e., 26697889 + 24383844 = 5167^2 + 4938^2 .

It is a cyclic number.

It is not a de Polignac number, because 51081733 - 2⁹ = 51081221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51081739) 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, 25540866 + 25540867.

It is an arithmetic number, because the mean of its divisors is an integer number (25540867).

Almost surely, 2^51081733 is an apocalyptic number.

It is an amenable number.

51081733 is a deficient number, since it is larger than the sum of its proper divisors (1).

51081733 is an equidigital number, since it uses as much as digits as its factorization.

51081733 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 51081733 is about 7147.1485922709. The cubic root of 51081733 is about 371.0409764802.

Adding to 51081733 its reverse (33718015), we get a palindrome (84799748).

The spelling of 51081733 in words is "fifty-one million, eighty-one thousand, seven hundred thirty-three".