50381639 has 8 divisors (see below), whose sum is σ = 62813568. Its totient is φ = 39258360.

The previous prime is 50381633. The next prime is 50381647. The reversal of 50381639 is 93618305.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50381639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50381599 and 50381608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50381633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327077 + ... + 327230.

It is an arithmetic number, because the mean of its divisors is an integer number (7851696).

Almost surely, 2^50381639 is an apocalyptic number.

50381639 is a deficient number, since it is larger than the sum of its proper divisors (12431929).

50381639 is a wasteful number, since it uses less digits than its factorization.

50381639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654325.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 50381639 is about 7098.0024654828. The cubic root of 50381639 is about 369.3380885544.

Subtracting from 50381639 its sum of digits (35), we obtain a square (50381604 = 7098²).

The spelling of 50381639 in words is "fifty million, three hundred eighty-one thousand, six hundred thirty-nine".