41981565 has 16 divisors (see below), whose sum is σ = 68439168. Its totient is φ = 21967296.

The previous prime is 41981549. The next prime is 41981573. The reversal of 41981565 is 56518914.

It is not a de Polignac number, because 41981565 - 2⁴ = 41981549 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25609 + ... + 27198.

It is an arithmetic number, because the mean of its divisors is an integer number (4277448).

Almost surely, 2^41981565 is an apocalyptic number.

It is an amenable number.

41981565 is a deficient number, since it is larger than the sum of its proper divisors (26457603).

41981565 is a wasteful number, since it uses less digits than its factorization.

41981565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52868.

The product of its digits is 43200, while the sum is 39.

The square root of 41981565 is about 6479.3182511743. The cubic root of 41981565 is about 347.5517994656.

The spelling of 41981565 in words is "forty-one million, nine hundred eighty-one thousand, five hundred sixty-five".