5643111 has 4 divisors (see below), whose sum is σ = 7524152. Its totient is φ = 3762072.

The previous prime is 5643109. The next prime is 5643137. The reversal of 5643111 is 1113465.

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

It is not a de Polignac number, because 5643111 - 2¹ = 5643109 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5643161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 940516 + ... + 940521.

It is an arithmetic number, because the mean of its divisors is an integer number (1881038).

Almost surely, 2^5643111 is an apocalyptic number.

5643111 is a deficient number, since it is larger than the sum of its proper divisors (1881041).

5643111 is a wasteful number, since it uses less digits than its factorization.

5643111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881040.

The product of its digits is 360, while the sum is 21.

The square root of 5643111 is about 2375.5233107675. The cubic root of 5643111 is about 178.0353315380.

Adding to 5643111 its reverse (1113465), we get a palindrome (6756576).

The spelling of 5643111 in words is "five million, six hundred forty-three thousand, one hundred eleven".