50839381 has 4 divisors (see below), whose sum is σ = 51410700. Its totient is φ = 50268064.

The previous prime is 50839379. The next prime is 50839387. The reversal of 50839381 is 18393805.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4040100 + 46799281 = 2010^2 + 6841^2 .

It is a cyclic number.

It is not a de Polignac number, because 50839381 - 2¹ = 50839379 is a prime.

It is a super-2 number, since 2×50839381² = 5169285320926322, which contains 22 as substring.

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 50839381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50839387) 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, 285526 + ... + 285703.

It is an arithmetic number, because the mean of its divisors is an integer number (12852675).

Almost surely, 2^50839381 is an apocalyptic number.

It is an amenable number.

50839381 is a deficient number, since it is larger than the sum of its proper divisors (571319).

50839381 is an equidigital number, since it uses as much as digits as its factorization.

50839381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571318.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 50839381 is about 7130.1739810470. The cubic root of 50839381 is about 370.4532575258.

The spelling of 50839381 in words is "fifty million, eight hundred thirty-nine thousand, three hundred eighty-one".