50021552221 has 8 divisors (see below), whose sum is σ = 50880749760. Its totient is φ = 49162733952.

The previous prime is 50021552209. The next prime is 50021552279. The reversal of 50021552221 is 12225512005.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 50021552221 - 2⁹ = 50021551709 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 (50021552201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177901 + ... + 362893.

It is an arithmetic number, because the mean of its divisors is an integer number (6360093720).

Almost surely, 2^50021552221 is an apocalyptic number.

It is an amenable number.

50021552221 is a deficient number, since it is larger than the sum of its proper divisors (859197539).

50021552221 is a wasteful number, since it uses less digits than its factorization.

50021552221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189635.

The product of its (nonzero) digits is 2000, while the sum is 25.

The spelling of 50021552221 in words is "fifty billion, twenty-one million, five hundred fifty-two thousand, two hundred twenty-one".