2556271 has 4 divisors (see below), whose sum is σ = 2564752. Its totient is φ = 2547792.

The previous prime is 2556259. The next prime is 2556277. The reversal of 2556271 is 1726552.

2556271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2556271 - 2⁷ = 2556143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556277) 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, 3771 + ... + 4396.

It is an arithmetic number, because the mean of its divisors is an integer number (641188).

2^2556271 is an apocalyptic number.

2556271 is a deficient number, since it is larger than the sum of its proper divisors (8481).

2556271 is an equidigital number, since it uses as much as digits as its factorization.

2556271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8480.

The product of its digits is 4200, while the sum is 28.

The square root of 2556271 is about 1598.8342628303. The cubic root of 2556271 is about 136.7316215789.

The spelling of 2556271 in words is "two million, five hundred fifty-six thousand, two hundred seventy-one".