50138 has 16 divisors (see below), whose sum is σ = 85536. Its totient is φ = 21840.

The previous prime is 50131. The next prime is 50147. The reversal of 50138 is 83105.

It is an Ulam number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (50131) by changing a digit.

50138 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 920 + ... + 972.

It is an arithmetic number, because the mean of its divisors is an integer number (5346).

2⁵⁰¹³⁸ is an apocalyptic number.

50138 is a deficient number, since it is larger than the sum of its proper divisors (35398).

50138 is a wasteful number, since it uses less digits than its factorization.

50138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109.

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

The square root of 50138 is about 223.9151625058. The cubic root of 50138 is about 36.8741769423.

It can be divided in two parts, 5013 and 8, that multiplied together give a palindrome (40104).

The spelling of 50138 in words is "fifty thousand, one hundred thirty-eight".