557297109 has 12 divisors (see below), whose sum is σ = 814684416. Its totient is φ = 367054632.

The previous prime is 557297063. The next prime is 557297123. The reversal of 557297109 is 901792755.

557297109 is a `hidden beast` number, since 5 + 572 + 9 + 71 + 0 + 9 = 666.

It is not a de Polignac number, because 557297109 - 2⁸ = 557296853 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557297149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 372277 + ... + 373770.

It is an arithmetic number, because the mean of its divisors is an integer number (67890368).

Almost surely, 2^557297109 is an apocalyptic number.

It is an amenable number.

557297109 is a deficient number, since it is larger than the sum of its proper divisors (257387307).

557297109 is a wasteful number, since it uses less digits than its factorization.

557297109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746136 (or 746133 counting only the distinct ones).

The product of its (nonzero) digits is 198450, while the sum is 45.

The square root of 557297109 is about 23607.1410594337. The cubic root of 557297109 is about 822.9288034250.

The spelling of 557297109 in words is "five hundred fifty-seven million, two hundred ninety-seven thousand, one hundred nine".