6550043 has 2 divisors, whose sum is σ = 6550044. Its totient is φ = 6550042.

The previous prime is 6550031. The next prime is 6550057. The reversal of 6550043 is 3400556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6550043 - 2⁶ = 6549979 is a prime.

It is not a weakly prime, because it can be changed into another prime (6550013) 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, 3275021 + 3275022.

It is an arithmetic number, because the mean of its divisors is an integer number (3275022).

Almost surely, 2^6550043 is an apocalyptic number.

6550043 is a deficient number, since it is larger than the sum of its proper divisors (1).

6550043 is an equidigital number, since it uses as much as digits as its factorization.

6550043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 6550043 is about 2559.3051791453. The cubic root of 6550043 is about 187.1032725720.

Adding to 6550043 its reverse (3400556), we get a palindrome (9950599).

The spelling of 6550043 in words is "six million, five hundred fifty thousand, forty-three".