5191943 has 2 divisors, whose sum is σ = 5191944. Its totient is φ = 5191942.

The previous prime is 5191931. The next prime is 5191981. The reversal of 5191943 is 3491915.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5191943 is a prime.

It is a Sophie Germain prime.

It is equal to p₃₆₀₈₈₇ and since 5191943 and 360887 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5191243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2595971 + 2595972.

It is an arithmetic number, because the mean of its divisors is an integer number (2595972).

Almost surely, 2^5191943 is an apocalyptic number.

5191943 is a deficient number, since it is larger than the sum of its proper divisors (1).

5191943 is an equidigital number, since it uses as much as digits as its factorization.

5191943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860, while the sum is 32.

The square root of 5191943 is about 2278.5835512441. The cubic root of 5191943 is about 173.1582967579.

The spelling of 5191943 in words is "five million, one hundred ninety-one thousand, nine hundred forty-three".