557285705 has 4 divisors (see below), whose sum is σ = 668742852. Its totient is φ = 445828560.

The previous prime is 557285669. The next prime is 557285731. The reversal of 557285705 is 507582755.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 434430649 + 122855056 = 20843^2 + 11084^2 .

It is a de Polignac number, because none of the positive numbers 2^k-557285705 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55728566 + ... + 55728575.

It is an arithmetic number, because the mean of its divisors is an integer number (167185713).

Almost surely, 2^557285705 is an apocalyptic number.

It is an amenable number.

557285705 is a deficient number, since it is larger than the sum of its proper divisors (111457147).

557285705 is a wasteful number, since it uses less digits than its factorization.

557285705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111457146.

The product of its (nonzero) digits is 490000, while the sum is 44.

The square root of 557285705 is about 23606.8995211146. The cubic root of 557285705 is about 822.9231901749.

The spelling of 557285705 in words is "five hundred fifty-seven million, two hundred eighty-five thousand, seven hundred five".