55943 has 4 divisors (see below), whose sum is σ = 57288. Its totient is φ = 54600.

The previous prime is 55933. The next prime is 55949. The reversal of 55943 is 34955.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34955 = 5 ⋅6991.

It is a cyclic number.

It is not a de Polignac number, because 55943 - 2⁴ = 55927 is a prime.

It is a fibodiv number, since the Fibonacci-like sequence with seeds 559 and 43 contains 55943 itself.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 55943.

It is not an unprimeable number, because it can be changed into a prime (55949) 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, 608 + ... + 693.

It is an arithmetic number, because the mean of its divisors is an integer number (14322).

2⁵⁵⁹⁴³ is an apocalyptic number.

55943 is a deficient number, since it is larger than the sum of its proper divisors (1345).

55943 is a wasteful number, since it uses less digits than its factorization.

55943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344.

The product of its digits is 2700, while the sum is 26.

The square root of 55943 is about 236.5227261808. The cubic root of 55943 is about 38.2456386444.

The spelling of 55943 in words is "fifty-five thousand, nine hundred forty-three".