54889 has 4 divisors (see below), whose sum is σ = 55440. Its totient is φ = 54340.

The previous prime is 54881. The next prime is 54907. The reversal of 54889 is 98845.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 54889 - 2³ = 54881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54881) 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, 79 + ... + 340.

It is an arithmetic number, because the mean of its divisors is an integer number (13860).

2⁵⁴⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

54889 is a deficient number, since it is larger than the sum of its proper divisors (551).

54889 is a wasteful number, since it uses less digits than its factorization.

54889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550.

The product of its digits is 11520, while the sum is 34.

The square root of 54889 is about 234.2840156733. The cubic root of 54889 is about 38.0039238792.

Subtracting 54889 from its reverse (98845), we obtain a triangular number (43956 = T₂₉₆).

The spelling of 54889 in words is "fifty-four thousand, eight hundred eighty-nine".