5491819 has 2 divisors, whose sum is σ = 5491820. Its totient is φ = 5491818.

The previous prime is 5491813. The next prime is 5491841. The reversal of 5491819 is 9181945.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5491819 is a prime.

It is a super-2 number, since 2×5491819² = 60320151857522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5491813) 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, 2745909 + 2745910.

It is an arithmetic number, because the mean of its divisors is an integer number (2745910).

Almost surely, 2^5491819 is an apocalyptic number.

5491819 is a deficient number, since it is larger than the sum of its proper divisors (1).

5491819 is an equidigital number, since it uses as much as digits as its factorization.

5491819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 37.

The square root of 5491819 is about 2343.4630357657. The cubic root of 5491819 is about 176.4298527915.

The spelling of 5491819 in words is "five million, four hundred ninety-one thousand, eight hundred nineteen".