2556830 has 16 divisors (see below), whose sum is σ = 4844880. Its totient is φ = 968832.

The previous prime is 2556821. The next prime is 2556839. The reversal of 2556830 is 386552.

2556830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2556821) and next prime (2556839).

It is a junction number, because it is equal to n+sod(n) for n = 2556793 and 2556802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556839) 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 7 ways as a sum of consecutive naturals, for example, 6539 + ... + 6918.

It is an arithmetic number, because the mean of its divisors is an integer number (302805).

2^2556830 is an apocalyptic number.

2556830 is a deficient number, since it is larger than the sum of its proper divisors (2288050).

2556830 is a wasteful number, since it uses less digits than its factorization.

2556830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13483.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 2556830 is about 1599.0090681419. The cubic root of 2556830 is about 136.7415875809.

Subtracting from 2556830 its sum of digits (29), we obtain a square (2556801 = 1599²).

The spelling of 2556830 in words is "two million, five hundred fifty-six thousand, eight hundred thirty".