8787281 has 2 divisors, whose sum is σ = 8787282. Its totient is φ = 8787280.

The previous prime is 8787269. The next prime is 8787287. The reversal of 8787281 is 1827878.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8614225 + 173056 = 2935^2 + 416^2 .

It is a cyclic number.

It is not a de Polignac number, because 8787281 - 2⁶ = 8787217 is a prime.

It is a super-2 number, since 2×8787281² = 154432614745922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8787287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4393640 + 4393641.

It is an arithmetic number, because the mean of its divisors is an integer number (4393641).

Almost surely, 2^8787281 is an apocalyptic number.

It is an amenable number.

8787281 is a deficient number, since it is larger than the sum of its proper divisors (1).

8787281 is an equidigital number, since it uses as much as digits as its factorization.

8787281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50176, while the sum is 41.

The square root of 8787281 is about 2964.3348326395. The cubic root of 8787281 is about 206.3565086864.

The spelling of 8787281 in words is "eight million, seven hundred eighty-seven thousand, two hundred eighty-one".