54239 has 4 divisors (see below), whose sum is σ = 55056. Its totient is φ = 53424.

The previous prime is 54217. The next prime is 54251. The reversal of 54239 is 93245.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54269) 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, 299 + ... + 444.

It is an arithmetic number, because the mean of its divisors is an integer number (13764).

2⁵⁴²³⁹ is an apocalyptic number.

54239 is a deficient number, since it is larger than the sum of its proper divisors (817).

54239 is an equidigital number, since it uses as much as digits as its factorization.

54239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816.

The product of its digits is 1080, while the sum is 23.

The square root of 54239 is about 232.8926791464. The cubic root of 54239 is about 37.8533126030.

The spelling of 54239 in words is "fifty-four thousand, two hundred thirty-nine".