2555808 has 48 divisors (see below), whose sum is σ = 6814080. Its totient is φ = 838656.

The previous prime is 2555779. The next prime is 2555809. The reversal of 2555808 is 8085552.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (2555809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7416 + ... + 7752.

It is an arithmetic number, because the mean of its divisors is an integer number (141960).

2^2555808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2555808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3407040).

2555808 is an abundant number, since it is smaller than the sum of its proper divisors (4258272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2555808 is a wasteful number, since it uses less digits than its factorization.

2555808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 33.

The square root of 2555808 is about 1598.6894632792. The cubic root of 2555808 is about 136.7233659905.

The spelling of 2555808 in words is "two million, five hundred fifty-five thousand, eight hundred eight".