51985163 has 2 divisors, whose sum is σ = 51985164. Its totient is φ = 51985162.

The previous prime is 51985097. The next prime is 51985207. The reversal of 51985163 is 36158915.

51985163 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 51985163 - 2¹² = 51981067 is a prime.

It is not a weakly prime, because it can be changed into another prime (51985963) 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, 25992581 + 25992582.

It is an arithmetic number, because the mean of its divisors is an integer number (25992582).

Almost surely, 2^51985163 is an apocalyptic number.

51985163 is a deficient number, since it is larger than the sum of its proper divisors (1).

51985163 is an equidigital number, since it uses as much as digits as its factorization.

51985163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 38.

The square root of 51985163 is about 7210.0737166828. The cubic root of 51985163 is about 373.2156127741.

The spelling of 51985163 in words is "fifty-one million, nine hundred eighty-five thousand, one hundred sixty-three".