50686 has 4 divisors (see below), whose sum is σ = 76032. Its totient is φ = 25342.

The previous prime is 50683. The next prime is 50707. The reversal of 50686 is 68605.

50686 is nontrivially palindromic in base 9.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68605 = 5 ⋅13721.

It is a self number, because there is not a number n which added to its sum of digits gives 50686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12670 + ... + 12673.

It is an arithmetic number, because the mean of its divisors is an integer number (19008).

2⁵⁰⁶⁸⁶ is an apocalyptic number.

50686 is a deficient number, since it is larger than the sum of its proper divisors (25346).

50686 is a wasteful number, since it uses less digits than its factorization.

50686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25345.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 50686 is about 225.1355147461. The cubic root of 50686 is about 37.0080333178.

The spelling of 50686 in words is "fifty thousand, six hundred eighty-six".