55143 has 12 divisors (see below), whose sum is σ = 87048. Its totient is φ = 33360.

The previous prime is 55127. The next prime is 55147. The reversal of 55143 is 34155.

It is not a de Polignac number, because 55143 - 2⁴ = 55127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 180 + ... + 377.

It is an arithmetic number, because the mean of its divisors is an integer number (7254).

2⁵⁵¹⁴³ is an apocalyptic number.

55143 is a deficient number, since it is larger than the sum of its proper divisors (31905).

55143 is a wasteful number, since it uses less digits than its factorization.

55143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574 (or 571 counting only the distinct ones).

The product of its digits is 300, while the sum is 18.

The square root of 55143 is about 234.8254671027. The cubic root of 55143 is about 38.0624550057.

Adding to 55143 its reverse (34155), we get a palindrome (89298).

The spelling of 55143 in words is "fifty-five thousand, one hundred forty-three".