54123 has 4 divisors (see below), whose sum is σ = 72168. Its totient is φ = 36080.

The previous prime is 54121. The next prime is 54133. The reversal of 54123 is 32145.

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

It is a cyclic number.

It is not a de Polignac number, because 54123 - 2¹ = 54121 is a prime.

It is a D-number.

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

It is not an unprimeable number, because it can be changed into a prime (54121) 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, 9018 + ... + 9023.

It is an arithmetic number, because the mean of its divisors is an integer number (18042).

2⁵⁴¹²³ is an apocalyptic number.

54123 is a deficient number, since it is larger than the sum of its proper divisors (18045).

54123 is a wasteful number, since it uses less digits than its factorization.

54123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18044.

The product of its digits is 120, while the sum is 15.

The square root of 54123 is about 232.6435041002. The cubic root of 54123 is about 37.8263079367.

Adding to 54123 its reverse (32145), we get a palindrome (86268).

The spelling of 54123 in words is "fifty-four thousand, one hundred twenty-three".