2557841 has 16 divisors (see below), whose sum is σ = 3107328. Its totient is φ = 2073600.

The previous prime is 2557823. The next prime is 2557843. The reversal of 2557841 is 1487552.

It is a cyclic number.

It is not a de Polignac number, because 2557841 - 2⁶ = 2557777 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2557798 and 2557807.

It is not an unprimeable number, because it can be changed into a prime (2557843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4145 + ... + 4721.

It is an arithmetic number, because the mean of its divisors is an integer number (194208).

2^2557841 is an apocalyptic number.

It is an amenable number.

2557841 is a deficient number, since it is larger than the sum of its proper divisors (549487).

2557841 is a wasteful number, since it uses less digits than its factorization.

2557841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632.

The product of its digits is 11200, while the sum is 32.

The square root of 2557841 is about 1599.3251701890. The cubic root of 2557841 is about 136.7596082716.

The spelling of 2557841 in words is "two million, five hundred fifty-seven thousand, eight hundred forty-one".