50221979 has 4 divisors (see below), whose sum is σ = 51389976. Its totient is φ = 49053984.

The previous prime is 50221967. The next prime is 50221981. The reversal of 50221979 is 97912205.

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

It is a cyclic number.

It is not a de Polignac number, because 50221979 - 2¹² = 50217883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50221909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 583934 + ... + 584019.

It is an arithmetic number, because the mean of its divisors is an integer number (12847494).

Almost surely, 2^50221979 is an apocalyptic number.

50221979 is a deficient number, since it is larger than the sum of its proper divisors (1167997).

50221979 is a wasteful number, since it uses less digits than its factorization.

50221979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167996.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 50221979 is about 7086.7467148191. The cubic root of 50221979 is about 368.9475301358.

The spelling of 50221979 in words is "fifty million, two hundred twenty-one thousand, nine hundred seventy-nine".