557185961 has 8 divisors (see below), whose sum is σ = 576666120. Its totient is φ = 537723648.

The previous prime is 557185939. The next prime is 557185969. The reversal of 557185961 is 169581755.

It can be written as a sum of positive squares in 4 ways, for example, as 11262736 + 545923225 = 3356^2 + 23365^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-557185961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (557185969) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 104615 + ... + 109811.

It is an arithmetic number, because the mean of its divisors is an integer number (72083265).

Almost surely, 2^557185961 is an apocalyptic number.

It is an amenable number.

557185961 is a deficient number, since it is larger than the sum of its proper divisors (19480159).

557185961 is a wasteful number, since it uses less digits than its factorization.

557185961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8923.

The product of its digits is 378000, while the sum is 47.

The square root of 557185961 is about 23604.7868238627. The cubic root of 557185961 is about 822.8740911536.

The spelling of 557185961 in words is "five hundred fifty-seven million, one hundred eighty-five thousand, nine hundred sixty-one".