41665321 has 2 divisors, whose sum is σ = 41665322. Its totient is φ = 41665320.

The previous prime is 41665301. The next prime is 41665343. The reversal of 41665321 is 12356614.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30030400 + 11634921 = 5480^2 + 3411^2 .

It is a cyclic number.

It is not a de Polignac number, because 41665321 - 2⁵ = 41665289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 41665321.

It is not a weakly prime, because it can be changed into another prime (41665301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20832660 + 20832661.

It is an arithmetic number, because the mean of its divisors is an integer number (20832661).

Almost surely, 2^41665321 is an apocalyptic number.

It is an amenable number.

41665321 is a deficient number, since it is larger than the sum of its proper divisors (1).

41665321 is an equidigital number, since it uses as much as digits as its factorization.

41665321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 28.

The square root of 41665321 is about 6454.8680079456. The cubic root of 41665321 is about 346.6769050025.

The spelling of 41665321 in words is "forty-one million, six hundred sixty-five thousand, three hundred twenty-one".