10518281 has 2 divisors, whose sum is σ = 10518282. Its totient is φ = 10518280.

The previous prime is 10518247. The next prime is 10518283. The reversal of 10518281 is 18281501.

10518281 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., 6175225 + 4343056 = 2485^2 + 2084^2 .

It is a cyclic number.

It is not a de Polignac number, because 10518281 - 2⁶ = 10518217 is a prime.

It is a super-2 number, since 2×10518281² = 221268470389922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 10518283, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10518281.

It is not a weakly prime, because it can be changed into another prime (10518283) 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, 5259140 + 5259141.

It is an arithmetic number, because the mean of its divisors is an integer number (5259141).

Almost surely, 2^10518281 is an apocalyptic number.

It is an amenable number.

10518281 is a deficient number, since it is larger than the sum of its proper divisors (1).

10518281 is an equidigital number, since it uses as much as digits as its factorization.

10518281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 26.

The square root of 10518281 is about 3243.1899420170. The cubic root of 10518281 is about 219.1029658363.

Adding to 10518281 its reverse (18281501), we get a palindrome (28799782).

The spelling of 10518281 in words is "ten million, five hundred eighteen thousand, two hundred eighty-one".