2556446 has 8 divisors (see below), whose sum is σ = 3958464. Its totient is φ = 1236960.

The previous prime is 2556419. The next prime is 2556451. The reversal of 2556446 is 6446552.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20555 + ... + 20678.

It is an arithmetic number, because the mean of its divisors is an integer number (494808).

2^2556446 is an apocalyptic number.

2556446 is a deficient number, since it is larger than the sum of its proper divisors (1402018).

2556446 is a wasteful number, since it uses less digits than its factorization.

2556446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41266.

The product of its digits is 28800, while the sum is 32.

The square root of 2556446 is about 1598.8889892672. Note that the first 3 decimals coincide. The cubic root of 2556446 is about 136.7347416821.

The spelling of 2556446 in words is "two million, five hundred fifty-six thousand, four hundred forty-six".