5605891 has 2 divisors, whose sum is σ = 5605892. Its totient is φ = 5605890.

The previous prime is 5605877. The next prime is 5605909. The reversal of 5605891 is 1985065.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5605891 - 2⁷ = 5605763 is a prime.

It is not a weakly prime, because it can be changed into another prime (5605811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2802945 + 2802946.

It is an arithmetic number, because the mean of its divisors is an integer number (2802946).

Almost surely, 2^5605891 is an apocalyptic number.

5605891 is a deficient number, since it is larger than the sum of its proper divisors (1).

5605891 is an equidigital number, since it uses as much as digits as its factorization.

5605891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 5605891 is about 2367.6762869953. The cubic root of 5605891 is about 177.6430480794.

The spelling of 5605891 in words is "five million, six hundred five thousand, eight hundred ninety-one".