54891 has 16 divisors (see below), whose sum is σ = 86400. Its totient is φ = 34344.

The previous prime is 54881. The next prime is 54907. The reversal of 54891 is 19845.

54891 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 54891 - 2¹⁵ = 22123 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (54851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 460 + ... + 566.

It is an arithmetic number, because the mean of its divisors is an integer number (5400).

2⁵⁴⁸⁹¹ is an apocalyptic number.

54891 is a deficient number, since it is larger than the sum of its proper divisors (31509).

54891 is a wasteful number, since it uses less digits than its factorization.

54891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 129 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 54891 is about 234.2882839580. The cubic root of 54891 is about 38.0043854588.

The spelling of 54891 in words is "fifty-four thousand, eight hundred ninety-one".