557384869 has 2 divisors, whose sum is σ = 557384870. Its totient is φ = 557384868.

The previous prime is 557384851. The next prime is 557384897. The reversal of 557384869 is 968483755.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 451562500 + 105822369 = 21250^2 + 10287^2 .

It is a cyclic number.

It is not a de Polignac number, because 557384869 - 2⁵ = 557384837 is a prime.

It is a super-2 number, since 2×557384869² = 621355784380294322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557394869) 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, 278692434 + 278692435.

It is an arithmetic number, because the mean of its divisors is an integer number (278692435).

Almost surely, 2^557384869 is an apocalyptic number.

It is an amenable number.

557384869 is a deficient number, since it is larger than the sum of its proper divisors (1).

557384869 is an equidigital number, since it uses as much as digits as its factorization.

557384869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7257600, while the sum is 55.

The square root of 557384869 is about 23608.9997458596. Note that the first 3 decimals coincide. The cubic root of 557384869 is about 822.9719978839.

The spelling of 557384869 in words is "five hundred fifty-seven million, three hundred eighty-four thousand, eight hundred sixty-nine".