41630821 has 2 divisors, whose sum is σ = 41630822. Its totient is φ = 41630820.

The previous prime is 41630791. The next prime is 41630839. The reversal of 41630821 is 12803614.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39513796 + 2117025 = 6286^2 + 1455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41630821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41630021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20815410 + 20815411.

It is an arithmetic number, because the mean of its divisors is an integer number (20815411).

Almost surely, 2^41630821 is an apocalyptic number.

It is an amenable number.

41630821 is a deficient number, since it is larger than the sum of its proper divisors (1).

41630821 is an equidigital number, since it uses as much as digits as its factorization.

41630821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 41630821 is about 6452.1950528483. The cubic root of 41630821 is about 346.5811926641.

The spelling of 41630821 in words is "forty-one million, six hundred thirty thousand, eight hundred twenty-one".