5643109 has 2 divisors, whose sum is σ = 5643110. Its totient is φ = 5643108.

The previous prime is 5643103. The next prime is 5643137. The reversal of 5643109 is 9013465.

It is an a-pointer prime, because the next prime (5643137) can be obtained adding 5643109 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3744225 + 1898884 = 1935^2 + 1378^2 .

It is a cyclic number.

It is not a de Polignac number, because 5643109 - 2⁹ = 5642597 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5643103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2821554 + 2821555.

It is an arithmetic number, because the mean of its divisors is an integer number (2821555).

Almost surely, 2^5643109 is an apocalyptic number.

It is an amenable number.

5643109 is a deficient number, since it is larger than the sum of its proper divisors (1).

5643109 is an equidigital number, since it uses as much as digits as its factorization.

5643109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 5643109 is about 2375.5228898076. The cubic root of 5643109 is about 178.0353105053.

The spelling of 5643109 in words is "five million, six hundred forty-three thousand, one hundred nine".