50385603221 has 4 divisors (see below), whose sum is σ = 53349462252. Its totient is φ = 47421744192.

The previous prime is 50385603199. The next prime is 50385603253. The reversal of 50385603221 is 12230658305.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16125444196 + 34260159025 = 126986^2 + 185095^2 .

It is a cyclic number.

It is not a de Polignac number, because 50385603221 - 2¹⁸ = 50385341077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50385683221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1481929490 + ... + 1481929523.

It is an arithmetic number, because the mean of its divisors is an integer number (13337365563).

Almost surely, 2^50385603221 is an apocalyptic number.

It is an amenable number.

50385603221 is a deficient number, since it is larger than the sum of its proper divisors (2963859031).

50385603221 is a wasteful number, since it uses less digits than its factorization.

50385603221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2963859030.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 50385603221 in words is "fifty billion, three hundred eighty-five million, six hundred three thousand, two hundred twenty-one".