41220565 has 4 divisors (see below), whose sum is σ = 49464684. Its totient is φ = 32976448.

The previous prime is 41220559. The next prime is 41220587. The reversal of 41220565 is 56502214.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19027044 + 22193521 = 4362^2 + 4711^2 .

It is a cyclic number.

It is not a de Polignac number, because 41220565 - 2⁷ = 41220437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4122052 + ... + 4122061.

It is an arithmetic number, because the mean of its divisors is an integer number (12366171).

Almost surely, 2^41220565 is an apocalyptic number.

It is an amenable number.

41220565 is a deficient number, since it is larger than the sum of its proper divisors (8244119).

41220565 is an equidigital number, since it uses as much as digits as its factorization.

41220565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8244118.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 41220565 is about 6420.3243687527. The cubic root of 41220565 is about 345.4389567695.

Adding to 41220565 its reverse (56502214), we get a palindrome (97722779).

The spelling of 41220565 in words is "forty-one million, two hundred twenty thousand, five hundred sixty-five".