41975561 has 2 divisors, whose sum is σ = 41975562. Its totient is φ = 41975560.

The previous prime is 41975551. The next prime is 41975569. The reversal of 41975561 is 16557914.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40246336 + 1729225 = 6344^2 + 1315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41975561 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (41975569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20987780 + 20987781.

It is an arithmetic number, because the mean of its divisors is an integer number (20987781).

Almost surely, 2^41975561 is an apocalyptic number.

It is an amenable number.

41975561 is a deficient number, since it is larger than the sum of its proper divisors (1).

41975561 is an equidigital number, since it uses as much as digits as its factorization.

41975561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 38.

The square root of 41975561 is about 6478.8549142576. The cubic root of 41975561 is about 347.5352302842.

The spelling of 41975561 in words is "forty-one million, nine hundred seventy-five thousand, five hundred sixty-one".