41563809 has 27 divisors (see below), whose sum is σ = 70066737. Its totient is φ = 23673384.

The previous prime is 41563787. The next prime is 41563853. The reversal of 41563809 is 90836514.

The square root of 41563809 is 6447.

It is a perfect power (a square), and thus also a powerful number.

41563809 is a `hidden beast` number, since 4 + 15 + 638 + 0 + 9 = 666.

41563809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 41563809 - 2⁹ = 41563297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (41563909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 135234 + ... + 135540.

Almost surely, 2^41563809 is an apocalyptic number.

41563809 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

41563809 is the 6447-th square number.

41563809 is the 3224-th centered octagonal number.

It is an amenable number.

41563809 is a deficient number, since it is larger than the sum of its proper divisors (28502928).

41563809 is an equidigital number, since it uses as much as digits as its factorization.

41563809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The cubic root of 41563809 is about 346.3951320238.

Multiplying 41563809 by its sum of digits (36), we get a square (1496297124 = 38682²).

The spelling of 41563809 in words is "forty-one million, five hundred sixty-three thousand, eight hundred nine".