556057171 has 4 divisors (see below), whose sum is σ = 556143952. Its totient is φ = 555970392.

The previous prime is 556057169. The next prime is 556057189. The reversal of 556057171 is 171750655.

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

It is a cyclic number.

It is not a de Polignac number, because 556057171 - 2¹ = 556057169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 556057171.

It is not an unprimeable number, because it can be changed into a prime (556057111) by changing a digit.

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, 32940 + ... + 46873.

It is an arithmetic number, because the mean of its divisors is an integer number (139035988).

Almost surely, 2^556057171 is an apocalyptic number.

556057171 is a deficient number, since it is larger than the sum of its proper divisors (86781).

556057171 is an equidigital number, since it uses as much as digits as its factorization.

556057171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86780.

The product of its (nonzero) digits is 36750, while the sum is 37.

The square root of 556057171 is about 23580.8645091735. The cubic root of 556057171 is about 822.3180350288.

The spelling of 556057171 in words is "five hundred fifty-six million, fifty-seven thousand, one hundred seventy-one".