8581241 has 2 divisors, whose sum is σ = 8581242. Its totient is φ = 8581240.

The previous prime is 8581211. The next prime is 8581247. The reversal of 8581241 is 1421858.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5953600 + 2627641 = 2440^2 + 1621^2 .

It is a cyclic number.

It is not a de Polignac number, because 8581241 - 2¹⁰ = 8580217 is a prime.

It is not a weakly prime, because it can be changed into another prime (8581247) 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, 4290620 + 4290621.

It is an arithmetic number, because the mean of its divisors is an integer number (4290621).

Almost surely, 2^8581241 is an apocalyptic number.

It is an amenable number.

8581241 is a deficient number, since it is larger than the sum of its proper divisors (1).

8581241 is an equidigital number, since it uses as much as digits as its factorization.

8581241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2560, while the sum is 29.

The square root of 8581241 is about 2929.3755307232. The cubic root of 8581241 is about 204.7308862171.

The spelling of 8581241 in words is "eight million, five hundred eighty-one thousand, two hundred forty-one".