50001430021 has 2 divisors, whose sum is σ = 50001430022. Its totient is φ = 50001430020.

The previous prime is 50001429997. The next prime is 50001430043. The reversal of 50001430021 is 12003410005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35669988225 + 14331441796 = 188865^2 + 119714^2 .

It is a cyclic number.

It is not a de Polignac number, because 50001430021 - 2¹³ = 50001421829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 50001429977 and 50001430004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50001430051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25000715010 + 25000715011.

It is an arithmetic number, because the mean of its divisors is an integer number (25000715011).

Almost surely, 2^50001430021 is an apocalyptic number.

It is an amenable number.

50001430021 is a deficient number, since it is larger than the sum of its proper divisors (1).

50001430021 is an equidigital number, since it uses as much as digits as its factorization.

50001430021 is an evil number, because the sum of its binary digits is even.

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

Adding to 50001430021 its reverse (12003410005), we get a palindrome (62004840026).

It can be divided in two parts, 500014300 and 21, that added together give a square (500014321 = 22361²).

The spelling of 50001430021 in words is "fifty billion, one million, four hundred thirty thousand, twenty-one".