557455685 has 4 divisors (see below), whose sum is σ = 668946828. Its totient is φ = 445964544.

The previous prime is 557455681. The next prime is 557455693. The reversal of 557455685 is 586554755.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 586554755 = 5 ⋅117310951.

It can be written as a sum of positive squares in 2 ways, for example, as 435264769 + 122190916 = 20863^2 + 11054^2 .

It is a cyclic number.

It is not a de Polignac number, because 557455685 - 2² = 557455681 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557455681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55745564 + ... + 55745573.

It is an arithmetic number, because the mean of its divisors is an integer number (167236707).

Almost surely, 2^557455685 is an apocalyptic number.

It is an amenable number.

557455685 is a deficient number, since it is larger than the sum of its proper divisors (111491143).

557455685 is a wasteful number, since it uses less digits than its factorization.

557455685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111491142.

The product of its digits is 4200000, while the sum is 50.

The square root of 557455685 is about 23610.4994652803. The cubic root of 557455685 is about 823.0068493963.

The spelling of 557455685 in words is "five hundred fifty-seven million, four hundred fifty-five thousand, six hundred eighty-five".