41365721 has 2 divisors, whose sum is σ = 41365722. Its totient is φ = 41365720.

The previous prime is 41365703. The next prime is 41365757. The reversal of 41365721 is 12756314.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26925721 + 14440000 = 5189^2 + 3800^2 .

It is a cyclic number.

It is not a de Polignac number, because 41365721 - 2⁶ = 41365657 is a prime.

It is a super-2 number, since 2×41365721² = 3422245747699682, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (41365771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20682860 + 20682861.

It is an arithmetic number, because the mean of its divisors is an integer number (20682861).

Almost surely, 2^41365721 is an apocalyptic number.

It is an amenable number.

41365721 is a deficient number, since it is larger than the sum of its proper divisors (1).

41365721 is an equidigital number, since it uses as much as digits as its factorization.

41365721 is an evil number, because the sum of its binary digits is even.

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

The square root of 41365721 is about 6431.6188475375. The cubic root of 41365721 is about 345.8439632997.

The spelling of 41365721 in words is "forty-one million, three hundred sixty-five thousand, seven hundred twenty-one".