557706161 has 4 divisors (see below), whose sum is σ = 557760000. Its totient is φ = 557652324.

The previous prime is 557706157. The next prime is 557706181. The reversal of 557706161 is 161607755.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 557706161 - 2² = 557706157 is a prime.

It is a super-2 number, since 2×557706161² = 622072324034715842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (557706101) 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 3 ways as a sum of consecutive naturals, for example, 5921 + ... + 33918.

It is an arithmetic number, because the mean of its divisors is an integer number (139440000).

Almost surely, 2^557706161 is an apocalyptic number.

It is an amenable number.

557706161 is a deficient number, since it is larger than the sum of its proper divisors (53839).

557706161 is a wasteful number, since it uses less digits than its factorization.

557706161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53838.

The product of its (nonzero) digits is 44100, while the sum is 38.

The square root of 557706161 is about 23615.8032046340. The cubic root of 557706161 is about 823.1300954240.

The spelling of 557706161 in words is "five hundred fifty-seven million, seven hundred six thousand, one hundred sixty-one".