2557880 has 32 divisors (see below), whose sum is σ = 6199200. Its totient is φ = 944256.

The previous prime is 2557879. The next prime is 2557889. The reversal of 2557880 is 887552.

2557880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2557880.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2557889) 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, 1940 + ... + 2979.

It is an arithmetic number, because the mean of its divisors is an integer number (193725).

2^2557880 is an apocalyptic number.

2557880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2557880 is an abundant number, since it is smaller than the sum of its proper divisors (3641320).

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

2557880 is a wasteful number, since it uses less digits than its factorization.

2557880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4943 (or 4939 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 35.

The square root of 2557880 is about 1599.3373627850. The cubic root of 2557880 is about 136.7603033366.

The spelling of 2557880 in words is "two million, five hundred fifty-seven thousand, eight hundred eighty".