2557044 has 72 divisors (see below), whose sum is σ = 7542080. Its totient is φ = 715392.

The previous prime is 2557013. The next prime is 2557063. The reversal of 2557044 is 4407552.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 2556999 and 2557017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18327 + ... + 18465.

2^2557044 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 2557044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3771040).

2557044 is an abundant number, since it is smaller than the sum of its proper divisors (4985036).

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

2557044 is a wasteful number, since it uses less digits than its factorization.

2557044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 2557044 is about 1599.0759831853. The cubic root of 2557044 is about 136.7454024458.

The spelling of 2557044 in words is "two million, five hundred fifty-seven thousand, forty-four".