553859681 has 2 divisors, whose sum is σ = 553859682. Its totient is φ = 553859680.

The previous prime is 553859641. The next prime is 553859689. The reversal of 553859681 is 186958355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 404653456 + 149206225 = 20116^2 + 12215^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-553859681 is a prime.

It is a super-2 number, since 2×553859681² = 613521092474843522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (553859689) 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, 276929840 + 276929841.

It is an arithmetic number, because the mean of its divisors is an integer number (276929841).

Almost surely, 2^553859681 is an apocalyptic number.

It is an amenable number.

553859681 is a deficient number, since it is larger than the sum of its proper divisors (1).

553859681 is an equidigital number, since it uses as much as digits as its factorization.

553859681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296000, while the sum is 50.

The square root of 553859681 is about 23534.2236115832. The cubic root of 553859681 is about 821.2333615997.

The spelling of 553859681 in words is "five hundred fifty-three million, eight hundred fifty-nine thousand, six hundred eighty-one".