553681729 has 2 divisors, whose sum is σ = 553681730. Its totient is φ = 553681728.

The previous prime is 553681703. The next prime is 553681747. The reversal of 553681729 is 927186355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 370485504 + 183196225 = 19248^2 + 13535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-553681729 is a prime.

It is not a weakly prime, because it can be changed into another prime (553681759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276840864 + 276840865.

It is an arithmetic number, because the mean of its divisors is an integer number (276840865).

Almost surely, 2^553681729 is an apocalyptic number.

It is an amenable number.

553681729 is a deficient number, since it is larger than the sum of its proper divisors (1).

553681729 is an equidigital number, since it uses as much as digits as its factorization.

553681729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 46.

The square root of 553681729 is about 23530.4426010222. The cubic root of 553681729 is about 821.1453996253.

The spelling of 553681729 in words is "five hundred fifty-three million, six hundred eighty-one thousand, seven hundred twenty-nine".