41645161 has 2 divisors, whose sum is σ = 41645162. Its totient is φ = 41645160.

The previous prime is 41645159. The next prime is 41645171. The reversal of 41645161 is 16154614.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31147561 + 10497600 = 5581^2 + 3240^2 .

It is a cyclic number.

It is not a de Polignac number, because 41645161 - 2¹ = 41645159 is a prime.

Together with 41645159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (41645171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20822580 + 20822581.

It is an arithmetic number, because the mean of its divisors is an integer number (20822581).

Almost surely, 2^41645161 is an apocalyptic number.

It is an amenable number.

41645161 is a deficient number, since it is larger than the sum of its proper divisors (1).

41645161 is an equidigital number, since it uses as much as digits as its factorization.

41645161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 28.

The square root of 41645161 is about 6453.3062068989. The cubic root of 41645161 is about 346.6209821250.

Adding to 41645161 its reverse (16154614), we get a palindrome (57799775).

The spelling of 41645161 in words is "forty-one million, six hundred forty-five thousand, one hundred sixty-one".