54389 has 4 divisors (see below), whose sum is σ = 54924. Its totient is φ = 53856.

The previous prime is 54377. The next prime is 54401. The reversal of 54389 is 98345.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (54377) and next prime (54401).

It can be written as a sum of positive squares in 2 ways, for example, as 34225 + 20164 = 185^2 + 142^2 .

It is a cyclic number.

It is not a de Polignac number, because 54389 - 2⁸ = 54133 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54319) 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, 62 + ... + 335.

It is an arithmetic number, because the mean of its divisors is an integer number (13731).

2⁵⁴³⁸⁹ is an apocalyptic number.

It is an amenable number.

54389 is a deficient number, since it is larger than the sum of its proper divisors (535).

54389 is a wasteful number, since it uses less digits than its factorization.

54389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534.

The product of its digits is 4320, while the sum is 29.

The square root of 54389 is about 233.2144935462. The cubic root of 54389 is about 37.8881754058. Note that the first 3 decimals are identical.

Subtracting 54389 from its reverse (98345), we obtain a triangular number (43956 = T₂₉₆).

It can be divided in two parts, 5 and 4389, that multiplied together give a triangular number (21945 = T₂₀₉).

The spelling of 54389 in words is "fifty-four thousand, three hundred eighty-nine".