2556327191 has 6 divisors (see below), whose sum is σ = 2809847376. Its totient is φ = 2323933700.

The previous prime is 2556327181. The next prime is 2556327211. The reversal of 2556327191 is 1917236552.

It is not a de Polignac number, because 2556327191 - 2¹⁴ = 2556310807 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 (2556327101) 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 5 ways as a sum of consecutive naturals, for example, 10563215 + ... + 10563456.

It is an arithmetic number, because the mean of its divisors is an integer number (468307896).

Almost surely, 2^2556327191 is an apocalyptic number.

2556327191 is a deficient number, since it is larger than the sum of its proper divisors (253520185).

2556327191 is a wasteful number, since it uses less digits than its factorization.

2556327191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21126693 (or 21126682 counting only the distinct ones).

The product of its digits is 113400, while the sum is 41.

The square root of 2556327191 is about 50560.1344044891. The cubic root of 2556327191 is about 1367.3262343280.

The spelling of 2556327191 in words is "two billion, five hundred fifty-six million, three hundred twenty-seven thousand, one hundred ninety-one".