50042171 has 2 divisors, whose sum is σ = 50042172. Its totient is φ = 50042170.

The previous prime is 50042147. The next prime is 50042173. The reversal of 50042171 is 17124005.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50042171 is a prime.

Together with 50042173, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (50042173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25021085 + 25021086.

It is an arithmetic number, because the mean of its divisors is an integer number (25021086).

Almost surely, 2^50042171 is an apocalyptic number.

50042171 is a deficient number, since it is larger than the sum of its proper divisors (1).

50042171 is an equidigital number, since it uses as much as digits as its factorization.

50042171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 50042171 is about 7074.0491233805. The cubic root of 50042171 is about 368.5066936208.

Adding to 50042171 its reverse (17124005), we get a palindrome (67166176).

The spelling of 50042171 in words is "fifty million, forty-two thousand, one hundred seventy-one".