50442450221 has 2 divisors, whose sum is σ = 50442450222. Its totient is φ = 50442450220.

The previous prime is 50442450217. The next prime is 50442450239. The reversal of 50442450221 is 12205424405.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40828647721 + 9613802500 = 202061^2 + 98050^2 .

It is a cyclic number.

It is not a de Polignac number, because 50442450221 - 2² = 50442450217 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50442450251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25221225110 + 25221225111.

It is an arithmetic number, because the mean of its divisors is an integer number (25221225111).

Almost surely, 2^50442450221 is an apocalyptic number.

It is an amenable number.

50442450221 is a deficient number, since it is larger than the sum of its proper divisors (1).

50442450221 is an equidigital number, since it uses as much as digits as its factorization.

50442450221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12800, while the sum is 29.

Adding to 50442450221 its reverse (12205424405), we get a palindrome (62647874626).

The spelling of 50442450221 in words is "fifty billion, four hundred forty-two million, four hundred fifty thousand, two hundred twenty-one".