50208221 has 4 divisors (see below), whose sum is σ = 57380832. Its totient is φ = 43035612.

The previous prime is 50208209. The next prime is 50208229. The reversal of 50208221 is 12280205.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50208221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50208193 and 50208202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50208229) 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, 3586295 + ... + 3586308.

It is an arithmetic number, because the mean of its divisors is an integer number (14345208).

Almost surely, 2^50208221 is an apocalyptic number.

It is an amenable number.

50208221 is a deficient number, since it is larger than the sum of its proper divisors (7172611).

50208221 is an equidigital number, since it uses as much as digits as its factorization.

50208221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7172610.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 50208221 is about 7085.7759631532. The cubic root of 50208221 is about 368.9138367623.

Adding to 50208221 its reverse (12280205), we get a palindrome (62488426).

The spelling of 50208221 in words is "fifty million, two hundred eight thousand, two hundred twenty-one".