5640043 has 2 divisors, whose sum is σ = 5640044. Its totient is φ = 5640042.

The previous prime is 5640031. The next prime is 5640059. The reversal of 5640043 is 3400465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5640043 - 2¹³ = 5631851 is a prime.

5640043 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 5639996 and 5640023.

It is not a weakly prime, because it can be changed into another prime (5640343) 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 as a sum of consecutive naturals, namely, 2820021 + 2820022.

It is an arithmetic number, because the mean of its divisors is an integer number (2820022).

Almost surely, 2^5640043 is an apocalyptic number.

5640043 is a deficient number, since it is larger than the sum of its proper divisors (1).

5640043 is an equidigital number, since it uses as much as digits as its factorization.

5640043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 5640043 is about 2374.8774705235. The cubic root of 5640043 is about 178.0030614295.

The spelling of 5640043 in words is "five million, six hundred forty thousand, forty-three".