556271 has 2 divisors, whose sum is σ = 556272. Its totient is φ = 556270.

The previous prime is 556267. The next prime is 556273. The reversal of 556271 is 172655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 556271 - 2² = 556267 is a prime.

It is a Sophie Germain prime.

Together with 556273, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 556271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556273) 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 as a sum of consecutive naturals, namely, 278135 + 278136.

It is an arithmetic number, because the mean of its divisors is an integer number (278136).

2⁵⁵⁶²⁷¹ is an apocalyptic number.

556271 is a deficient number, since it is larger than the sum of its proper divisors (1).

556271 is an equidigital number, since it uses as much as digits as its factorization.

556271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2100, while the sum is 26.

The square root of 556271 is about 745.8357728079. The cubic root of 556271 is about 82.2423427614.

The spelling of 556271 in words is "five hundred fifty-six thousand, two hundred seventy-one".