50381 has 4 divisors (see below), whose sum is σ = 51072. Its totient is φ = 49692.

The previous prime is 50377. The next prime is 50383. The reversal of 50381 is 18305.

50381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 50381 - 2² = 50377 is a prime.

It is a super-2 number, since 2×50381² = 5076490322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50383) 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, 221 + ... + 386.

It is an arithmetic number, because the mean of its divisors is an integer number (12768).

2⁵⁰³⁸¹ is an apocalyptic number.

It is an amenable number.

50381 is a deficient number, since it is larger than the sum of its proper divisors (691).

50381 is an equidigital number, since it uses as much as digits as its factorization.

50381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 50381 is about 224.4571228542. The cubic root of 50381 is about 36.9336527086.

Adding to 50381 its reverse (18305), we get a palindrome (68686).

The spelling of 50381 in words is "fifty thousand, three hundred eighty-one".