547891 has 4 divisors (see below), whose sum is σ = 551232. Its totient is φ = 544552.

The previous prime is 547889. The next prime is 547901. The reversal of 547891 is 198745.

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: 198745 = 5 ⋅39749.

It is a cyclic number.

It is not a de Polignac number, because 547891 - 2¹ = 547889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (547831) 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, 1411 + ... + 1756.

It is an arithmetic number, because the mean of its divisors is an integer number (137808).

2⁵⁴⁷⁸⁹¹ is an apocalyptic number.

547891 is a deficient number, since it is larger than the sum of its proper divisors (3341).

547891 is a wasteful number, since it uses less digits than its factorization.

547891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340.

The product of its digits is 10080, while the sum is 34.

The square root of 547891 is about 740.1965955069. The cubic root of 547891 is about 81.8272687625.

The spelling of 547891 in words is "five hundred forty-seven thousand, eight hundred ninety-one".