51087733 has 2 divisors, whose sum is σ = 51087734. Its totient is φ = 51087732.

The previous prime is 51087709. The next prime is 51087791. The reversal of 51087733 is 33778015.

51087733 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., 41705764 + 9381969 = 6458^2 + 3063^2 .

It is a cyclic number.

It is not a de Polignac number, because 51087733 - 2¹³ = 51079541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51087133) 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, 25543866 + 25543867.

It is an arithmetic number, because the mean of its divisors is an integer number (25543867).

Almost surely, 2^51087733 is an apocalyptic number.

It is an amenable number.

51087733 is a deficient number, since it is larger than the sum of its proper divisors (1).

51087733 is an equidigital number, since it uses as much as digits as its factorization.

51087733 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 51087733 is about 7147.5683277601. The cubic root of 51087733 is about 371.0555032563.

The spelling of 51087733 in words is "fifty-one million, eighty-seven thousand, seven hundred thirty-three".