50054331221 has 4 divisors (see below), whose sum is σ = 50101508844. Its totient is φ = 50007153600.

The previous prime is 50054331211. The next prime is 50054331247. The reversal of 50054331221 is 12213345005.

It is a happy number.

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 25118763121 + 24935568100 = 158489^2 + 157910^2 .

It is a cyclic number.

It is not a de Polignac number, because 50054331221 - 2¹⁰ = 50054330197 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 (50054331211) 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, 23587220 + ... + 23589341.

It is an arithmetic number, because the mean of its divisors is an integer number (12525377211).

Almost surely, 2^50054331221 is an apocalyptic number.

It is an amenable number.

50054331221 is a deficient number, since it is larger than the sum of its proper divisors (47177623).

50054331221 is a wasteful number, since it uses less digits than its factorization.

50054331221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47177622.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 50054331221 its reverse (12213345005), we get a palindrome (62267676226).

The spelling of 50054331221 in words is "fifty billion, fifty-four million, three hundred thirty-one thousand, two hundred twenty-one".