53812 has 12 divisors (see below), whose sum is σ = 102816. Its totient is φ = 24440.

The previous prime is 53791. The next prime is 53813. The reversal of 53812 is 21835.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 53812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 568 + ... + 655.

It is an arithmetic number, because the mean of its divisors is an integer number (8568).

2⁵³⁸¹² is an apocalyptic number.

It is an amenable number.

53812 is a deficient number, since it is larger than the sum of its proper divisors (49004).

53812 is a wasteful number, since it uses less digits than its factorization.

53812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238 (or 1236 counting only the distinct ones).

The product of its digits is 240, while the sum is 19.

The square root of 53812 is about 231.9741364894. The cubic root of 53812 is about 37.7537165763.

The spelling of 53812 in words is "fifty-three thousand, eight hundred twelve".