5643311 has 4 divisors (see below), whose sum is σ = 5650992. Its totient is φ = 5635632.

The previous prime is 5643307. The next prime is 5643317. The reversal of 5643311 is 1133465.

It is a happy number.

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 5643311 - 2² = 5643307 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 (5643317) 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, 2606 + ... + 4251.

It is an arithmetic number, because the mean of its divisors is an integer number (1412748).

Almost surely, 2^5643311 is an apocalyptic number.

5643311 is a deficient number, since it is larger than the sum of its proper divisors (7681).

5643311 is an equidigital number, since it uses as much as digits as its factorization.

5643311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7680.

The product of its digits is 1080, while the sum is 23.

The square root of 5643311 is about 2375.5654063822. The cubic root of 5643311 is about 178.0374347896.

Adding to 5643311 its reverse (1133465), we get a palindrome (6776776).

The spelling of 5643311 in words is "five million, six hundred forty-three thousand, three hundred eleven".