55340 has 12 divisors (see below), whose sum is σ = 116256. Its totient is φ = 22128.

The previous prime is 55339. The next prime is 55343. The reversal of 55340 is 4355.

55340 is nontrivially palindromic in base 3.

It is not an unprimeable number, because it can be changed into a prime (55343) 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, 1364 + ... + 1403.

It is an arithmetic number, because the mean of its divisors is an integer number (9688).

2⁵⁵³⁴⁰ is an apocalyptic number.

It is an amenable number.

55340 is an abundant number, since it is smaller than the sum of its proper divisors (60916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58128).

55340 is a wasteful number, since it uses less digits than its factorization.

55340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2776 (or 2774 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 55340 is about 235.2445536033. The cubic root of 55340 is about 38.1077275517.

Adding to 55340 its reverse (4355), we get a palindrome (59695).

The spelling of 55340 in words is "fifty-five thousand, three hundred forty".