50305300021 has 2 divisors, whose sum is σ = 50305300022. Its totient is φ = 50305300020.

The previous prime is 50305299943. The next prime is 50305300091. The reversal of 50305300021 is 12000350305.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49857977521 + 447322500 = 223289^2 + 21150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50305300021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50305300091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25152650010 + 25152650011.

It is an arithmetic number, because the mean of its divisors is an integer number (25152650011).

Almost surely, 2^50305300021 is an apocalyptic number.

It is an amenable number.

50305300021 is a deficient number, since it is larger than the sum of its proper divisors (1).

50305300021 is an equidigital number, since it uses as much as digits as its factorization.

50305300021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 450, while the sum is 19.

Adding to 50305300021 its reverse (12000350305), we get a palindrome (62305650326).

The spelling of 50305300021 in words is "fifty billion, three hundred five million, three hundred thousand, twenty-one".