55684 has 6 divisors (see below), whose sum is σ = 97454.
Its totient is φ = 27840.
The previous prime is 55681. The next prime is 55691. The reversal of 55684 is 48655.
It can be written as a sum of positive squares in only one way, i.e., 49284 + 6400 = 222^2 + 80^2
It is a nialpdrome in base 16.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (55681) 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 as a sum of consecutive naturals, namely, 6957 + ... + 6964.
255684 is an apocalyptic number.
It is an amenable number.
55684 is a deficient number, since it is larger than the sum of its proper divisors (41770).
55684 is a wasteful number, since it uses less digits than its factorization.
55684 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 13925 (or 13923 counting only the distinct ones).
The product of its digits is 4800, while the sum is 28.
The square root of 55684 is about 235.9745749016.
The cubic root of 55684 is about 38.1865252219.
The spelling of 55684 in words is "fifty-five thousand, six hundred eighty-four".