41864561 has 2 divisors, whose sum is σ = 41864562. Its totient is φ = 41864560.

The previous prime is 41864533. The next prime is 41864593. The reversal of 41864561 is 16546814.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41152225 + 712336 = 6415^2 + 844^2 .

It is a cyclic number.

It is not a de Polignac number, because 41864561 - 2⁶ = 41864497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (41864161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20932280 + 20932281.

It is an arithmetic number, because the mean of its divisors is an integer number (20932281).

Almost surely, 2^41864561 is an apocalyptic number.

It is an amenable number.

41864561 is a deficient number, since it is larger than the sum of its proper divisors (1).

41864561 is an equidigital number, since it uses as much as digits as its factorization.

41864561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 35.

The square root of 41864561 is about 6470.2829149891. The cubic root of 41864561 is about 347.2286196164.

The spelling of 41864561 in words is "forty-one million, eight hundred sixty-four thousand, five hundred sixty-one".