50381821 has 8 divisors (see below), whose sum is σ = 57659904. Its totient is φ = 43123920.

The previous prime is 50381819. The next prime is 50381831. The reversal of 50381821 is 12818305.

50381821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 50381821 - 2¹ = 50381819 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50381821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50381831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 756 + ... + 10066.

It is an arithmetic number, because the mean of its divisors is an integer number (7207488).

Almost surely, 2^50381821 is an apocalyptic number.

It is an amenable number.

50381821 is a deficient number, since it is larger than the sum of its proper divisors (7278083).

50381821 is an equidigital number, since it uses as much as digits as its factorization.

50381821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10091.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 50381821 is about 7098.0152859796. The cubic root of 50381821 is about 369.3385332895.

It can be divided in two parts, 5038 and 1821, that added together give a cube (6859 = 19³).

The spelling of 50381821 in words is "fifty million, three hundred eighty-one thousand, eight hundred twenty-one".