557809829 has 2 divisors, whose sum is σ = 557809830. Its totient is φ = 557809828.

The previous prime is 557809807. The next prime is 557809871. The reversal of 557809829 is 928908755.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 397204900 + 160604929 = 19930^2 + 12673^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-557809829 is a prime.

It is a super-2 number, since 2×557809829² = 622303610658018482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557809529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278904914 + 278904915.

It is an arithmetic number, because the mean of its divisors is an integer number (278904915).

Almost surely, 2^557809829 is an apocalyptic number.

It is an amenable number.

557809829 is a deficient number, since it is larger than the sum of its proper divisors (1).

557809829 is an equidigital number, since it uses as much as digits as its factorization.

557809829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1814400, while the sum is 53.

The square root of 557809829 is about 23617.9979888220. The cubic root of 557809829 is about 823.1810941817.

The spelling of 557809829 in words is "five hundred fifty-seven million, eight hundred nine thousand, eight hundred twenty-nine".