5509643 has 2 divisors, whose sum is σ = 5509644. Its totient is φ = 5509642.

The previous prime is 5509631. The next prime is 5509657. The reversal of 5509643 is 3469055.

It is a happy number.

5509643 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5509643 - 2¹² = 5505547 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5500643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2754821 + 2754822.

It is an arithmetic number, because the mean of its divisors is an integer number (2754822).

Almost surely, 2^5509643 is an apocalyptic number.

5509643 is a deficient number, since it is larger than the sum of its proper divisors (1).

5509643 is an equidigital number, since it uses as much as digits as its factorization.

5509643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 5509643 is about 2347.2628740727. The cubic root of 5509643 is about 176.6205175927.

The spelling of 5509643 in words is "five million, five hundred nine thousand, six hundred forty-three".