5541891 has 4 divisors (see below), whose sum is σ = 7389192. Its totient is φ = 3694592.

The previous prime is 5541869. The next prime is 5541931. The reversal of 5541891 is 1981455.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5541891 - 2¹⁹ = 5017603 is a prime.

It is an Ulam number.

It is a D-number.

5541891 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5541841) 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 3 ways as a sum of consecutive naturals, for example, 923646 + ... + 923651.

It is an arithmetic number, because the mean of its divisors is an integer number (1847298).

Almost surely, 2^5541891 is an apocalyptic number.

5541891 is a deficient number, since it is larger than the sum of its proper divisors (1847301).

5541891 is a wasteful number, since it uses less digits than its factorization.

5541891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847300.

The product of its digits is 7200, while the sum is 33.

The square root of 5541891 is about 2354.1221293722. The cubic root of 5541891 is about 176.9644347451.

The spelling of 5541891 in words is "five million, five hundred forty-one thousand, eight hundred ninety-one".