50143021 has 2 divisors, whose sum is σ = 50143022. Its totient is φ = 50143020.

The previous prime is 50143007. The next prime is 50143057. The reversal of 50143021 is 12034105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42640900 + 7502121 = 6530^2 + 2739^2 .

It is a cyclic number.

It is not a de Polignac number, because 50143021 - 2⁷ = 50142893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 50142986 and 50143004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50143061) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25071510 + 25071511.

It is an arithmetic number, because the mean of its divisors is an integer number (25071511).

Almost surely, 2^50143021 is an apocalyptic number.

It is an amenable number.

50143021 is a deficient number, since it is larger than the sum of its proper divisors (1).

50143021 is an equidigital number, since it uses as much as digits as its factorization.

50143021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 50143021 is about 7081.1737021485. The cubic root of 50143021 is about 368.7540780551.

Adding to 50143021 its reverse (12034105), we get a palindrome (62177126).

The spelling of 50143021 in words is "fifty million, one hundred forty-three thousand, twenty-one".