541891 has 6 divisors (see below), whose sum is σ = 630420. Its totient is φ = 464436.

The previous prime is 541889. The next prime is 541901. The reversal of 541891 is 198145.

It is a happy number.

It is not a de Polignac number, because 541891 - 2¹ = 541889 is a prime.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (541831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5481 + ... + 5578.

It is an arithmetic number, because the mean of its divisors is an integer number (105070).

2⁵⁴¹⁸⁹¹ is an apocalyptic number.

541891 is a deficient number, since it is larger than the sum of its proper divisors (88529).

541891 is a wasteful number, since it uses less digits than its factorization.

541891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11073 (or 11066 counting only the distinct ones).

The product of its digits is 1440, while the sum is 28.

The square root of 541891 is about 736.1324609063. The cubic root of 541891 is about 81.5274726407.

The spelling of 541891 in words is "five hundred forty-one thousand, eight hundred ninety-one".