41521321 has 2 divisors, whose sum is σ = 41521322. Its totient is φ = 41521320.

The previous prime is 41521303. The next prime is 41521343. The reversal of 41521321 is 12312514.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41422096 + 99225 = 6436^2 + 315^2 .

It is a cyclic number.

It is not a de Polignac number, because 41521321 - 2¹¹ = 41519273 is a prime.

It is not a weakly prime, because it can be changed into another prime (41521391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20760660 + 20760661.

It is an arithmetic number, because the mean of its divisors is an integer number (20760661).

Almost surely, 2^41521321 is an apocalyptic number.

It is an amenable number.

41521321 is a deficient number, since it is larger than the sum of its proper divisors (1).

41521321 is an equidigital number, since it uses as much as digits as its factorization.

41521321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 19.

The square root of 41521321 is about 6443.7039814070. The cubic root of 41521321 is about 346.2770593179.

Adding to 41521321 its reverse (12312514), we get a palindrome (53833835).

It can be divided in two parts, 415 and 21321, that added together give a triangular number (21736 = T₂₀₈).

The spelling of 41521321 in words is "forty-one million, five hundred twenty-one thousand, three hundred twenty-one".