41566891 has 2 divisors, whose sum is σ = 41566892. Its totient is φ = 41566890.

The previous prime is 41566871. The next prime is 41566919. The reversal of 41566891 is 19866514.

41566891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 41566891 - 2⁵ = 41566859 is a prime.

It is not a weakly prime, because it can be changed into another prime (41566871) 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, 20783445 + 20783446.

It is an arithmetic number, because the mean of its divisors is an integer number (20783446).

Almost surely, 2^41566891 is an apocalyptic number.

41566891 is a deficient number, since it is larger than the sum of its proper divisors (1).

41566891 is an equidigital number, since it uses as much as digits as its factorization.

41566891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 40.

The square root of 41566891 is about 6447.2390214727. The cubic root of 41566891 is about 346.4036936662.

The spelling of 41566891 in words is "forty-one million, five hundred sixty-six thousand, eight hundred ninety-one".