8540281 has 2 divisors, whose sum is σ = 8540282. Its totient is φ = 8540280.

The previous prime is 8540243. The next prime is 8540293. The reversal of 8540281 is 1820458.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6677056 + 1863225 = 2584^2 + 1365^2 .

It is a cyclic number.

It is not a de Polignac number, because 8540281 - 2²³ = 151673 is a prime.

It is a super-2 number, since 2×8540281² = 145872799117922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8540381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4270140 + 4270141.

It is an arithmetic number, because the mean of its divisors is an integer number (4270141).

Almost surely, 2^8540281 is an apocalyptic number.

It is an amenable number.

8540281 is a deficient number, since it is larger than the sum of its proper divisors (1).

8540281 is an equidigital number, since it uses as much as digits as its factorization.

8540281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 8540281 is about 2922.3759169552. The cubic root of 8540281 is about 204.4046259116.

The spelling of 8540281 in words is "eight million, five hundred forty thousand, two hundred eighty-one".