41564681 has 4 divisors (see below), whose sum is σ = 41715012. Its totient is φ = 41414352.

The previous prime is 41564639. The next prime is 41564683. The reversal of 41564681 is 18646514.

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 23425600 + 18139081 = 4840^2 + 4259^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41564681 is a prime.

It is a super-2 number, since 2×41564681² = 3455245413263522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41564683) 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, 74750 + ... + 75303.

It is an arithmetic number, because the mean of its divisors is an integer number (10428753).

Almost surely, 2^41564681 is an apocalyptic number.

It is an amenable number.

41564681 is a deficient number, since it is larger than the sum of its proper divisors (150331).

41564681 is a wasteful number, since it uses less digits than its factorization.

41564681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150330.

The product of its digits is 23040, while the sum is 35.

The square root of 41564681 is about 6447.0676279996. The cubic root of 41564681 is about 346.3975544393.

The spelling of 41564681 in words is "forty-one million, five hundred sixty-four thousand, six hundred eighty-one".