54491 has 4 divisors (see below), whose sum is σ = 56400. Its totient is φ = 52584.

The previous prime is 54469. The next prime is 54493. The reversal of 54491 is 19445.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19445 = 5 ⋅3889.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54491 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (54493) 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, 911 + ... + 968.

It is an arithmetic number, because the mean of its divisors is an integer number (14100).

2⁵⁴⁴⁹¹ is an apocalyptic number.

54491 is a deficient number, since it is larger than the sum of its proper divisors (1909).

54491 is a wasteful number, since it uses less digits than its factorization.

54491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1908.

The product of its digits is 720, while the sum is 23.

The square root of 54491 is about 233.4330739206. The cubic root of 54491 is about 37.9118455140.

It can be divided in two parts, 54 and 491, that added together give a palindrome (545).

The spelling of 54491 in words is "fifty-four thousand, four hundred ninety-one".