51836 has 6 divisors (see below), whose sum is σ = 90720. Its totient is φ = 25916.

The previous prime is 51829. The next prime is 51839. The reversal of 51836 is 63815.

51836 is nontrivially palindromic in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51839) by changing a digit.

51836 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, 6476 + ... + 6483.

It is an arithmetic number, because the mean of its divisors is an integer number (15120).

2⁵¹⁸³⁶ is an apocalyptic number.

It is an amenable number.

51836 is a deficient number, since it is larger than the sum of its proper divisors (38884).

51836 is a wasteful number, since it uses less digits than its factorization.

51836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12963 (or 12961 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 51836 is about 227.6752072581. The cubic root of 51836 is about 37.2858310244.

It can be divided in two parts, 5 and 1836, that multiplied together give a triangular number (9180 = T₁₃₅).

The spelling of 51836 in words is "fifty-one thousand, eight hundred thirty-six".