104981281 has 2 divisors, whose sum is σ = 104981282. Its totient is φ = 104981280.

The previous prime is 104981209. The next prime is 104981299. The reversal of 104981281 is 182189401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101687056 + 3294225 = 10084^2 + 1815^2 .

It is an emirp because it is prime and its reverse (182189401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104981281 - 2⁷ = 104981153 is a prime.

It is a super-2 number, since 2×104981281² = 22042138720801922, which contains 22 as substring.

It is equal to p_6031699 and since 104981281 and 6031699 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (104985281) 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, 52490640 + 52490641.

It is an arithmetic number, because the mean of its divisors is an integer number (52490641).

Almost surely, 2^104981281 is an apocalyptic number.

It is an amenable number.

104981281 is a deficient number, since it is larger than the sum of its proper divisors (1).

104981281 is an equidigital number, since it uses as much as digits as its factorization.

104981281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 34.

The square root of 104981281 is about 10246.0373315736. The cubic root of 104981281 is about 471.7413612818.

The spelling of 104981281 in words is "one hundred four million, nine hundred eighty-one thousand, two hundred eighty-one".