557517971 has 4 divisors (see below), whose sum is σ = 568037232. Its totient is φ = 546998712.

The previous prime is 557517949. The next prime is 557517991. The reversal of 557517971 is 179715755.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-557517971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (557517991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5259551 + ... + 5259656.

It is an arithmetic number, because the mean of its divisors is an integer number (142009308).

Almost surely, 2^557517971 is an apocalyptic number.

557517971 is a deficient number, since it is larger than the sum of its proper divisors (10519261).

557517971 is a wasteful number, since it uses less digits than its factorization.

557517971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10519260.

The product of its digits is 385875, while the sum is 47.

The square root of 557517971 is about 23611.8184602542. The cubic root of 557517971 is about 823.0375004997.

The spelling of 557517971 in words is "five hundred fifty-seven million, five hundred seventeen thousand, nine hundred seventy-one".