51605683 has 2 divisors, whose sum is σ = 51605684. Its totient is φ = 51605682.

The previous prime is 51605681. The next prime is 51605699. The reversal of 51605683 is 38650615.

51605683 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 51605683 - 2¹ = 51605681 is a prime.

Together with 51605681, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51605681) 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, 25802841 + 25802842.

It is an arithmetic number, because the mean of its divisors is an integer number (25802842).

Almost surely, 2^51605683 is an apocalyptic number.

51605683 is a deficient number, since it is larger than the sum of its proper divisors (1).

51605683 is an equidigital number, since it uses as much as digits as its factorization.

51605683 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 51605683 is about 7183.7095570464. The cubic root of 51605683 is about 372.3052640378.

The spelling of 51605683 in words is "fifty-one million, six hundred five thousand, six hundred eighty-three".