2556449 has 8 divisors (see below), whose sum is σ = 2970048. Its totient is φ = 2154960.

The previous prime is 2556419. The next prime is 2556451. The reversal of 2556449 is 9446552.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2556449 - 2⁸ = 2556193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2556419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2567 + ... + 3420.

It is an arithmetic number, because the mean of its divisors is an integer number (371256).

2^2556449 is an apocalyptic number.

It is an amenable number.

2556449 is a deficient number, since it is larger than the sum of its proper divisors (413599).

2556449 is an equidigital number, since it uses as much as digits as its factorization.

2556449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6055.

The product of its digits is 43200, while the sum is 35.

The square root of 2556449 is about 1598.8899274184. The cubic root of 2556449 is about 136.7347951683.

The spelling of 2556449 in words is "two million, five hundred fifty-six thousand, four hundred forty-nine".