54191 has 4 divisors (see below), whose sum is σ = 55392. Its totient is φ = 52992.

The previous prime is 54181. The next prime is 54193. The reversal of 54191 is 19145.

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-54191 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 (54193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530 + ... + 623.

It is an arithmetic number, because the mean of its divisors is an integer number (13848).

2⁵⁴¹⁹¹ is an apocalyptic number.

54191 is a deficient number, since it is larger than the sum of its proper divisors (1201).

54191 is a wasteful number, since it uses less digits than its factorization.

54191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200.

The product of its digits is 180, while the sum is 20.

The square root of 54191 is about 232.7896045789. The cubic root of 54191 is about 37.8421429327.

The spelling of 54191 in words is "fifty-four thousand, one hundred ninety-one".