5491943 has 2 divisors, whose sum is σ = 5491944. Its totient is φ = 5491942.

The previous prime is 5491939. The next prime is 5491951. The reversal of 5491943 is 3491945.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5491943 - 2² = 5491939 is a prime.

It is a super-2 number, since 2×5491943² = 60322875830498, which contains 22 as substring.

It is a d-powerful number, because it can be written as 5³ + 4 + 9⁶ + 1 + 9⁷ + 4⁴ + 3¹¹ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5491973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2745971 + 2745972.

It is an arithmetic number, because the mean of its divisors is an integer number (2745972).

Almost surely, 2^5491943 is an apocalyptic number.

5491943 is a deficient number, since it is larger than the sum of its proper divisors (1).

5491943 is an equidigital number, since it uses as much as digits as its factorization.

5491943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 35.

The square root of 5491943 is about 2343.4894921889. The cubic root of 5491943 is about 176.4311806537.

The spelling of 5491943 in words is "five million, four hundred ninety-one thousand, nine hundred forty-three".