41813521 has 2 divisors, whose sum is σ = 41813522. Its totient is φ = 41813520.

The previous prime is 41813483. The next prime is 41813531. The reversal of 41813521 is 12531814.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31979025 + 9834496 = 5655^2 + 3136^2 .

It is a cyclic number.

It is not a de Polignac number, because 41813521 - 2⁷ = 41813393 is a prime.

It is not a weakly prime, because it can be changed into another prime (41813531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20906760 + 20906761.

It is an arithmetic number, because the mean of its divisors is an integer number (20906761).

Almost surely, 2^41813521 is an apocalyptic number.

It is an amenable number.

41813521 is a deficient number, since it is larger than the sum of its proper divisors (1).

41813521 is an equidigital number, since it uses as much as digits as its factorization.

41813521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 25.

The square root of 41813521 is about 6466.3375259880. The cubic root of 41813521 is about 347.0874520396.

The spelling of 41813521 in words is "forty-one million, eight hundred thirteen thousand, five hundred twenty-one".