50516321 has 2 divisors, whose sum is σ = 50516322. Its totient is φ = 50516320.

The previous prime is 50516309. The next prime is 50516327. The reversal of 50516321 is 12361505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49900096 + 616225 = 7064^2 + 785^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50516321 is a prime.

It is not a weakly prime, because it can be changed into another prime (50516327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25258160 + 25258161.

It is an arithmetic number, because the mean of its divisors is an integer number (25258161).

Almost surely, 2^50516321 is an apocalyptic number.

It is an amenable number.

50516321 is a deficient number, since it is larger than the sum of its proper divisors (1).

50516321 is an equidigital number, since it uses as much as digits as its factorization.

50516321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 50516321 is about 7107.4834505611. The cubic root of 50516321 is about 369.6669049913. Note that the first 3 decimals are identical.

Adding to 50516321 its reverse (12361505), we get a palindrome (62877826).

The spelling of 50516321 in words is "fifty million, five hundred sixteen thousand, three hundred twenty-one".