557727813 has 6 divisors (see below), whose sum is σ = 805606854. Its totient is φ = 371818536.

The previous prime is 557727761. The next prime is 557727817. The reversal of 557727813 is 318727755.

557727813 is a `hidden beast` number, since 5 + 577 + 2 + 78 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 299739969 + 257987844 = 17313^2 + 16062^2 .

It is not a de Polignac number, because 557727813 - 2⁸ = 557727557 is a prime.

It is a super-2 number, since 2×557727813² = 622120626787525938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557727817) 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 in 5 ways as a sum of consecutive naturals, for example, 30984870 + ... + 30984887.

It is an arithmetic number, because the mean of its divisors is an integer number (134267809).

Almost surely, 2^557727813 is an apocalyptic number.

It is an amenable number.

557727813 is a deficient number, since it is larger than the sum of its proper divisors (247879041).

557727813 is a wasteful number, since it uses less digits than its factorization.

557727813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61969763 (or 61969760 counting only the distinct ones).

The product of its digits is 411600, while the sum is 45.

The square root of 557727813 is about 23616.2616220265. The cubic root of 557727813 is about 823.1407474982.

The spelling of 557727813 in words is "five hundred fifty-seven million, seven hundred twenty-seven thousand, eight hundred thirteen".