53806 has 4 divisors (see below), whose sum is σ = 80712. Its totient is φ = 26902.

The previous prime is 53791. The next prime is 53813. The reversal of 53806 is 60835.

53806 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.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

53806 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 as a sum of consecutive naturals, namely, 13450 + ... + 13453.

It is an arithmetic number, because the mean of its divisors is an integer number (20178).

2⁵³⁸⁰⁶ is an apocalyptic number.

53806 is a deficient number, since it is larger than the sum of its proper divisors (26906).

53806 is a wasteful number, since it uses less digits than its factorization.

53806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26905.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 53806 is about 231.9612036527. The cubic root of 53806 is about 37.7523133533.

The spelling of 53806 in words is "fifty-three thousand, eight hundred six".