50272647221 has 4 divisors (see below), whose sum is σ = 50273423244. Its totient is φ = 50271871200.

The previous prime is 50272647209. The next prime is 50272647239. The reversal of 50272647221 is 12274627205.

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 4575034321 + 45697612900 = 67639^2 + 213770^2 .

It is a cyclic number.

It is not a de Polignac number, because 50272647221 - 2¹⁸ = 50272385077 is a prime.

It is a super-3 number, since 3×50272647221³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50272647241) 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, 281000 + ... + 423681.

It is an arithmetic number, because the mean of its divisors is an integer number (12568355811).

Almost surely, 2^50272647221 is an apocalyptic number.

It is an amenable number.

50272647221 is a deficient number, since it is larger than the sum of its proper divisors (776023).

50272647221 is an equidigital number, since it uses as much as digits as its factorization.

50272647221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776022.

The product of its (nonzero) digits is 94080, while the sum is 38.

The spelling of 50272647221 in words is "fifty billion, two hundred seventy-two million, six hundred forty-seven thousand, two hundred twenty-one".