2556241 has 12 divisors (see below), whose sum is σ = 2763012. Its totient is φ = 2363904.

The previous prime is 2556233. The next prime is 2556259. The reversal of 2556241 is 1426552.

It can be written as a sum of positive squares in 2 ways, for example, as 1299600 + 1256641 = 1140^2 + 1121^2 .

It is not a de Polignac number, because 2556241 - 2³ = 2556233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2556041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26305 + ... + 26401.

It is an arithmetic number, because the mean of its divisors is an integer number (230251).

2^2556241 is an apocalyptic number.

It is an amenable number.

2556241 is a deficient number, since it is larger than the sum of its proper divisors (206771).

2556241 is an equidigital number, since it uses as much as digits as its factorization.

2556241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 189 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 2556241 is about 1598.8248809673. The cubic root of 2556241 is about 136.7310866898.

The spelling of 2556241 in words is "two million, five hundred fifty-six thousand, two hundred forty-one".