41240561 has 4 divisors (see below), whose sum is σ = 41448000. Its totient is φ = 41033124.

The previous prime is 41240557. The next prime is 41240579. The reversal of 41240561 is 16504214.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 41240561 - 2² = 41240557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41240501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103421 + ... + 103818.

It is an arithmetic number, because the mean of its divisors is an integer number (10362000).

Almost surely, 2^41240561 is an apocalyptic number.

It is an amenable number.

41240561 is a deficient number, since it is larger than the sum of its proper divisors (207439).

41240561 is a wasteful number, since it uses less digits than its factorization.

41240561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207438.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 41240561 is about 6421.8814221379. The cubic root of 41240561 is about 345.4948049508.

Adding to 41240561 its reverse (16504214), we get a palindrome (57744775).

The spelling of 41240561 in words is "forty-one million, two hundred forty thousand, five hundred sixty-one".