5643331 has 2 divisors, whose sum is σ = 5643332. Its totient is φ = 5643330.

The previous prime is 5643329. The next prime is 5643347. The reversal of 5643331 is 1333465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5643331 - 2¹ = 5643329 is a prime.

It is a super-2 number, since 2×5643331² = 63694369551122, which contains 22 as substring.

Together with 5643329, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 5643296 and 5643305.

It is not a weakly prime, because it can be changed into another prime (5643301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2821665 + 2821666.

It is an arithmetic number, because the mean of its divisors is an integer number (2821666).

Almost surely, 2^5643331 is an apocalyptic number.

5643331 is a deficient number, since it is larger than the sum of its proper divisors (1).

5643331 is an equidigital number, since it uses as much as digits as its factorization.

5643331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 25.

The square root of 5643331 is about 2375.5696159027. The cubic root of 5643331 is about 178.0376451120.

Adding to 5643331 its reverse (1333465), we get a palindrome (6976796).

The spelling of 5643331 in words is "five million, six hundred forty-three thousand, three hundred thirty-one".