50443391 has 2 divisors, whose sum is σ = 50443392. Its totient is φ = 50443390.

The previous prime is 50443373. The next prime is 50443397. The reversal of 50443391 is 19334405.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 50443391 - 2¹⁰ = 50442367 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50443397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25221695 + 25221696.

It is an arithmetic number, because the mean of its divisors is an integer number (25221696).

Almost surely, 2^50443391 is an apocalyptic number.

50443391 is a deficient number, since it is larger than the sum of its proper divisors (1).

50443391 is an equidigital number, since it uses as much as digits as its factorization.

50443391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 50443391 is about 7102.3510896041. The cubic root of 50443391 is about 369.4889242836.

Adding to 50443391 its reverse (19334405), we get a palindrome (69777796).

The spelling of 50443391 in words is "fifty million, four hundred forty-three thousand, three hundred ninety-one".