41563721 has 2 divisors, whose sum is σ = 41563722. Its totient is φ = 41563720.

The previous prime is 41563703. The next prime is 41563723. The reversal of 41563721 is 12736514.

41563721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27040000 + 14523721 = 5200^2 + 3811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41563721 is a prime.

It is a super-3 number, since 3×41563721³ (a number of 24 digits) contains 333 as substring.

Together with 41563723, 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 (41563723) 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, 20781860 + 20781861.

It is an arithmetic number, because the mean of its divisors is an integer number (20781861).

Almost surely, 2^41563721 is an apocalyptic number.

It is an amenable number.

41563721 is a deficient number, since it is larger than the sum of its proper divisors (1).

41563721 is an equidigital number, since it uses as much as digits as its factorization.

41563721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 29.

The square root of 41563721 is about 6446.9931751166. The cubic root of 41563721 is about 346.3948875580.

The spelling of 41563721 in words is "forty-one million, five hundred sixty-three thousand, seven hundred twenty-one".