5050021 has 2 divisors, whose sum is σ = 5050022. Its totient is φ = 5050020.

The previous prime is 5050013. The next prime is 5050033. The reversal of 5050021 is 1200505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4901796 + 148225 = 2214^2 + 385^2 .

It is a cyclic number.

It is not a de Polignac number, because 5050021 - 2³ = 5050013 is a prime.

5050021 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 5049983 and 5050010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5050051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2525010 + 2525011.

It is an arithmetic number, because the mean of its divisors is an integer number (2525011).

Almost surely, 2^5050021 is an apocalyptic number.

It is an amenable number.

5050021 is a deficient number, since it is larger than the sum of its proper divisors (1).

5050021 is an equidigital number, since it uses as much as digits as its factorization.

5050021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50, while the sum is 13.

The square root of 5050021 is about 2247.2251778582. The cubic root of 5050021 is about 171.5659349757.

Adding to 5050021 its reverse (1200505), we get a palindrome (6250526).

The spelling of 5050021 in words is "five million, fifty thousand, twenty-one".