6451943 has 2 divisors, whose sum is σ = 6451944. Its totient is φ = 6451942.

The previous prime is 6451933. The next prime is 6451967. The reversal of 6451943 is 3491546.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6451943 - 2⁴ = 6451927 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6451933) 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, 3225971 + 3225972.

It is an arithmetic number, because the mean of its divisors is an integer number (3225972).

Almost surely, 2^6451943 is an apocalyptic number.

6451943 is a deficient number, since it is larger than the sum of its proper divisors (1).

6451943 is an equidigital number, since it uses as much as digits as its factorization.

6451943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 32.

The square root of 6451943 is about 2540.0675187876. The cubic root of 6451943 is about 186.1644881692.

The spelling of 6451943 in words is "six million, four hundred fifty-one thousand, nine hundred forty-three".