41645081 has 2 divisors, whose sum is σ = 41645082. Its totient is φ = 41645080.

The previous prime is 41645057. The next prime is 41645083. The reversal of 41645081 is 18054614.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23232400 + 18412681 = 4820^2 + 4291^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41645081 is a prime.

It is a super-2 number, since 2×41645081² = 3468625542993122, which contains 22 as substring.

Together with 41645083, 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 (41645083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20822540 + 20822541.

It is an arithmetic number, because the mean of its divisors is an integer number (20822541).

Almost surely, 2^41645081 is an apocalyptic number.

It is an amenable number.

41645081 is a deficient number, since it is larger than the sum of its proper divisors (1).

41645081 is an equidigital number, since it uses as much as digits as its factorization.

41645081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 41645081 is about 6453.3000085228. The cubic root of 41645081 is about 346.6207601729.

Adding to 41645081 its reverse (18054614), we get a palindrome (59699695).

The spelling of 41645081 in words is "forty-one million, six hundred forty-five thousand, eighty-one".