557005561 has 8 divisors (see below), whose sum is σ = 674023680. Its totient is φ = 449348928.

The previous prime is 557005543. The next prime is 557005573. The reversal of 557005561 is 165500755.

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

It is not a de Polignac number, because 557005561 - 2⁷ = 557005433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (557005261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2340241 + ... + 2340478.

It is an arithmetic number, because the mean of its divisors is an integer number (84252960).

Almost surely, 2^557005561 is an apocalyptic number.

It is an amenable number.

557005561 is a deficient number, since it is larger than the sum of its proper divisors (117018119).

557005561 is a wasteful number, since it uses less digits than its factorization.

557005561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4680743.

The product of its (nonzero) digits is 26250, while the sum is 34.

The square root of 557005561 is about 23600.9652556839. The cubic root of 557005561 is about 822.7852743012.

The spelling of 557005561 in words is "five hundred fifty-seven million, five thousand, five hundred sixty-one".