3005491 has 2 divisors, whose sum is σ = 3005492. Its totient is φ = 3005490.

The previous prime is 3005489. The next prime is 3005503. The reversal of 3005491 is 1945003.

It is a weak prime.

It is an emirp because it is prime and its reverse (1945003) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3005491 - 2¹ = 3005489 is a prime.

Together with 3005489, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3005291) 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, 1502745 + 1502746.

It is an arithmetic number, because the mean of its divisors is an integer number (1502746).

Almost surely, 2^3005491 is an apocalyptic number.

3005491 is a deficient number, since it is larger than the sum of its proper divisors (1).

3005491 is an equidigital number, since it uses as much as digits as its factorization.

3005491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 3005491 is about 1733.6351980737. The cubic root of 3005491 is about 144.3128966484.

The spelling of 3005491 in words is "three million, five thousand, four hundred ninety-one".