557844985 has 4 divisors (see below), whose sum is σ = 669413988. Its totient is φ = 446275984.

The previous prime is 557844979. The next prime is 557845003. The reversal of 557844985 is 589448755.

It is a happy number.

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 59305401 + 498539584 = 7701^2 + 22328^2 .

It is a cyclic number.

It is not a de Polignac number, because 557844985 - 2⁷ = 557844857 is a prime.

It is a super-2 number, since 2×557844985² = 622382054579300450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55784494 + ... + 55784503.

It is an arithmetic number, because the mean of its divisors is an integer number (167353497).

Almost surely, 2^557844985 is an apocalyptic number.

It is an amenable number.

557844985 is a deficient number, since it is larger than the sum of its proper divisors (111569003).

557844985 is a wasteful number, since it uses less digits than its factorization.

557844985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111569002.

The product of its digits is 8064000, while the sum is 55.

The square root of 557844985 is about 23618.7422400093. The cubic root of 557844985 is about 823.1983874987.

The spelling of 557844985 in words is "five hundred fifty-seven million, eight hundred forty-four thousand, nine hundred eighty-five".