41616561 has 32 divisors (see below), whose sum is σ = 68732928. Its totient is φ = 21853440.

The previous prime is 41616541. The next prime is 41616569. The reversal of 41616561 is 16561614.

It is not a de Polignac number, because 41616561 - 2⁵ = 41616529 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (41616569) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13996 + ... + 16706.

It is an arithmetic number, because the mean of its divisors is an integer number (2147904).

Almost surely, 2^41616561 is an apocalyptic number.

It is an amenable number.

41616561 is a deficient number, since it is larger than the sum of its proper divisors (27116367).

41616561 is a wasteful number, since it uses less digits than its factorization.

41616561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2781.

The product of its digits is 4320, while the sum is 30.

The square root of 41616561 is about 6451.0899079148. The cubic root of 41616561 is about 346.5416161189.

The spelling of 41616561 in words is "forty-one million, six hundred sixteen thousand, five hundred sixty-one".