55444 has 12 divisors (see below), whose sum is σ = 98784. Its totient is φ = 27224.

The previous prime is 55441. The next prime is 55457. The reversal of 55444 is 44455.

It is a nialpdrome in base 10.

It is a zygodrome in base 3 and base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55441) 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, 249 + ... + 415.

It is an arithmetic number, because the mean of its divisors is an integer number (8232).

2⁵⁵⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

55444 is a deficient number, since it is larger than the sum of its proper divisors (43340).

55444 is a wasteful number, since it uses less digits than its factorization.

55444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 252 counting only the distinct ones).

The product of its digits is 1600, while the sum is 22.

The square root of 55444 is about 235.4654964108. The cubic root of 55444 is about 38.1315844580.

Adding to 55444 its reverse (44455), we get a palindrome (99899).

The spelling of 55444 in words is "fifty-five thousand, four hundred forty-four".