50318321 has 2 divisors, whose sum is σ = 50318322. Its totient is φ = 50318320.

The previous prime is 50318311. The next prime is 50318329. The reversal of 50318321 is 12381305.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49843600 + 474721 = 7060^2 + 689^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50318321 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (50318329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25159160 + 25159161.

It is an arithmetic number, because the mean of its divisors is an integer number (25159161).

Almost surely, 2^50318321 is an apocalyptic number.

It is an amenable number.

50318321 is a deficient number, since it is larger than the sum of its proper divisors (1).

50318321 is an equidigital number, since it uses as much as digits as its factorization.

50318321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 50318321 is about 7093.5407942719. The cubic root of 50318321 is about 369.1832996722.

Adding to 50318321 its reverse (12381305), we get a palindrome (62699626).

The spelling of 50318321 in words is "fifty million, three hundred eighteen thousand, three hundred twenty-one".