41630021 has 2 divisors, whose sum is σ = 41630022. Its totient is φ = 41630020.

The previous prime is 41630011. The next prime is 41630033. The reversal of 41630021 is 12003614.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28569025 + 13060996 = 5345^2 + 3614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41630021 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41630011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20815010 + 20815011.

It is an arithmetic number, because the mean of its divisors is an integer number (20815011).

Almost surely, 2^41630021 is an apocalyptic number.

It is an amenable number.

41630021 is a deficient number, since it is larger than the sum of its proper divisors (1).

41630021 is an equidigital number, since it uses as much as digits as its factorization.

41630021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 41630021 is about 6452.1330581444. The cubic root of 41630021 is about 346.5789726204.

Adding to 41630021 its reverse (12003614), we get a palindrome (53633635).

The spelling of 41630021 in words is "forty-one million, six hundred thirty thousand, twenty-one".