55144 has 16 divisors (see below), whose sum is σ = 106020. Its totient is φ = 26880.
The previous prime is 55127. The next prime is 55147. The reversal of 55144 is 44155.
It can be written as a sum of positive squares in 2 ways, for example, as 36100 + 19044 = 190^2 + 138^2 .
It is not an unprimeable number, because it can be changed into a prime (55147) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 432 + ... + 544.
255144 is an apocalyptic number.
It is an amenable number.
55144 is a deficient number, since it is larger than the sum of its proper divisors (50876).
55144 is a wasteful number, since it uses less digits than its factorization.
55144 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 180 (or 176 counting only the distinct ones).
The product of its digits is 400, while the sum is 19.
The square root of 55144 is about 234.8275963340. The cubic root of 55144 is about 38.0626850877.
Adding to 55144 its reverse (44155), we get a palindrome (99299).
It can be divided in two parts, 551 and 44, that added together give a palindrome (595).
The spelling of 55144 in words is "fifty-five thousand, one hundred forty-four".
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