10817281 has 2 divisors, whose sum is σ = 10817282. Its totient is φ = 10817280.

The previous prime is 10817263. The next prime is 10817293. The reversal of 10817281 is 18271801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7789681 + 3027600 = 2791^2 + 1740^2 .

It is an emirp because it is prime and its reverse (18271801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10817281 - 2⁹ = 10816769 is a prime.

It is a super-2 number, since 2×10817281² = 234027136465922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10817881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5408640 + 5408641.

It is an arithmetic number, because the mean of its divisors is an integer number (5408641).

Almost surely, 2^10817281 is an apocalyptic number.

It is an amenable number.

10817281 is a deficient number, since it is larger than the sum of its proper divisors (1).

10817281 is an equidigital number, since it uses as much as digits as its factorization.

10817281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 28.

The square root of 10817281 is about 3288.9635145438. The cubic root of 10817281 is about 221.1597229231.

The spelling of 10817281 in words is "ten million, eight hundred seventeen thousand, two hundred eighty-one".