51568859 has 2 divisors, whose sum is σ = 51568860. Its totient is φ = 51568858.

The previous prime is 51568817. The next prime is 51568877. The reversal of 51568859 is 95886515.

51568859 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51568859 - 2¹⁶ = 51503323 is a prime.

It is not a weakly prime, because it can be changed into another prime (51568459) 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, 25784429 + 25784430.

It is an arithmetic number, because the mean of its divisors is an integer number (25784430).

Almost surely, 2^51568859 is an apocalyptic number.

51568859 is a deficient number, since it is larger than the sum of its proper divisors (1).

51568859 is an equidigital number, since it uses as much as digits as its factorization.

51568859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432000, while the sum is 47.

The square root of 51568859 is about 7181.1460784474. The cubic root of 51568859 is about 372.2166883198.

The spelling of 51568859 in words is "fifty-one million, five hundred sixty-eight thousand, eight hundred fifty-nine".