41678561 has 2 divisors, whose sum is σ = 41678562. Its totient is φ = 41678560.

The previous prime is 41678537. The next prime is 41678563. The reversal of 41678561 is 16587614.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30913600 + 10764961 = 5560^2 + 3281^2 .

It is a cyclic number.

It is not a de Polignac number, because 41678561 - 2²² = 37484257 is a prime.

Together with 41678563, it forms a pair of twin primes.

It is a Chen prime.

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

It is not a weakly prime, because it can be changed into another prime (41678563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20839280 + 20839281.

It is an arithmetic number, because the mean of its divisors is an integer number (20839281).

Almost surely, 2^41678561 is an apocalyptic number.

It is an amenable number.

41678561 is a deficient number, since it is larger than the sum of its proper divisors (1).

41678561 is an equidigital number, since it uses as much as digits as its factorization.

41678561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 38.

The square root of 41678561 is about 6455.8935090350. The cubic root of 41678561 is about 346.7136223173.

The spelling of 41678561 in words is "forty-one million, six hundred seventy-eight thousand, five hundred sixty-one".