557561530 has 8 divisors (see below), whose sum is σ = 1003610772. Its totient is φ = 223024608.

The previous prime is 557561513. The next prime is 557561573. The reversal of 557561530 is 35165755.

It can be written as a sum of positive squares in 2 ways, for example, as 502163281 + 55398249 = 22409^2 + 7443^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 557561530.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 27878067 + ... + 27878086.

Almost surely, 2^557561530 is an apocalyptic number.

557561530 is a deficient number, since it is larger than the sum of its proper divisors (446049242).

557561530 is a wasteful number, since it uses less digits than its factorization.

557561530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55756160.

The product of its (nonzero) digits is 78750, while the sum is 37.

The square root of 557561530 is about 23612.7408404869. The cubic root of 557561530 is about 823.0589346409.

The spelling of 557561530 in words is "five hundred fifty-seven million, five hundred sixty-one thousand, five hundred thirty".