2557004 has 24 divisors (see below), whose sum is σ = 4894848. Its totient is φ = 1163520.

The previous prime is 2556997. The next prime is 2557007. The reversal of 2557004 is 4007552.

It is a Smith number, since the sum of its digits (23) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2557007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1502 + ... + 2714.

It is an arithmetic number, because the mean of its divisors is an integer number (203952).

2^2557004 is an apocalyptic number.

It is an amenable number.

2557004 is a deficient number, since it is larger than the sum of its proper divisors (2337844).

2557004 is a wasteful number, since it uses less digits than its factorization.

2557004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265 (or 1263 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 2557004 is about 1599.0634759133. The cubic root of 2557004 is about 136.7446894032.

The spelling of 2557004 in words is "two million, five hundred fifty-seven thousand, four".