41665261 has 24 divisors (see below), whose sum is σ = 47832120. Its totient is φ = 36241920.

The previous prime is 41665243. The next prime is 41665277. The reversal of 41665261 is 16256614.

It can be written as a sum of positive squares in 4 ways, for example, as 5593225 + 36072036 = 2365^2 + 6006^2 .

It is not a de Polignac number, because 41665261 - 2⁵ = 41665229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41665291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 468105 + ... + 468193.

It is an arithmetic number, because the mean of its divisors is an integer number (1993005).

Almost surely, 2^41665261 is an apocalyptic number.

It is an amenable number.

41665261 is a deficient number, since it is larger than the sum of its proper divisors (6166859).

41665261 is a wasteful number, since it uses less digits than its factorization.

41665261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237 (or 226 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 41665261 is about 6454.8633602889. The cubic root of 41665261 is about 346.6767385922.

The spelling of 41665261 in words is "forty-one million, six hundred sixty-five thousand, two hundred sixty-one".