50200021 has 2 divisors, whose sum is σ = 50200022. Its totient is φ = 50200020.

The previous prime is 50200019. The next prime is 50200039. The reversal of 50200021 is 12000205.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27447121 + 22752900 = 5239^2 + 4770^2 .

It is a cyclic number.

It is not a de Polignac number, because 50200021 - 2¹ = 50200019 is a prime.

Together with 50200019, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 50199980 and 50200007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50200001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25100010 + 25100011.

It is an arithmetic number, because the mean of its divisors is an integer number (25100011).

Almost surely, 2^50200021 is an apocalyptic number.

It is an amenable number.

50200021 is a deficient number, since it is larger than the sum of its proper divisors (1).

50200021 is an equidigital number, since it uses as much as digits as its factorization.

50200021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 50200021 is about 7085.1973155305. The cubic root of 50200021 is about 368.8937520158.

Adding to 50200021 its reverse (12000205), we get a palindrome (62200226).

The spelling of 50200021 in words is "fifty million, two hundred thousand, twenty-one".