8575981 has 2 divisors, whose sum is σ = 8575982. Its totient is φ = 8575980.

The previous prime is 8575969. The next prime is 8575991. The reversal of 8575981 is 1895758.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8037225 + 538756 = 2835^2 + 734^2 .

It is a cyclic number.

It is not a de Polignac number, because 8575981 - 2²³ = 187373 is a prime.

It is a super-2 number, since 2×8575981² = 147094900224722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8575901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4287990 + 4287991.

It is an arithmetic number, because the mean of its divisors is an integer number (4287991).

Almost surely, 2^8575981 is an apocalyptic number.

It is an amenable number.

8575981 is a deficient number, since it is larger than the sum of its proper divisors (1).

8575981 is an equidigital number, since it uses as much as digits as its factorization.

8575981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 43.

The square root of 8575981 is about 2928.4775908311. The cubic root of 8575981 is about 204.6890467144.

The spelling of 8575981 in words is "eight million, five hundred seventy-five thousand, nine hundred eighty-one".