8518261 has 2 divisors, whose sum is σ = 8518262. Its totient is φ = 8518260.

The previous prime is 8518231. The next prime is 8518277. The reversal of 8518261 is 1628158.

8518261 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8151025 + 367236 = 2855^2 + 606^2 .

It is a cyclic number.

It is not a de Polignac number, because 8518261 - 2¹¹ = 8516213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8518231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4259130 + 4259131.

It is an arithmetic number, because the mean of its divisors is an integer number (4259131).

Almost surely, 2^8518261 is an apocalyptic number.

It is an amenable number.

8518261 is a deficient number, since it is larger than the sum of its proper divisors (1).

8518261 is an equidigital number, since it uses as much as digits as its factorization.

8518261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 31.

The square root of 8518261 is about 2918.6060028719. The cubic root of 8518261 is about 204.2287978244.

The spelling of 8518261 in words is "eight million, five hundred eighteen thousand, two hundred sixty-one".