2557804 has 6 divisors (see below), whose sum is σ = 4476164. Its totient is φ = 1278900.

The previous prime is 2557781. The next prime is 2557813. The reversal of 2557804 is 4087552.

2557804 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2557804² = 13084722604832, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 319722 + ... + 319729.

2^2557804 is an apocalyptic number.

It is an amenable number.

2557804 is a deficient number, since it is larger than the sum of its proper divisors (1918360).

2557804 is a wasteful number, since it uses less digits than its factorization.

2557804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639455 (or 639453 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 2557804 is about 1599.3136027684. The cubic root of 2557804 is about 136.7589488444.

The spelling of 2557804 in words is "two million, five hundred fifty-seven thousand, eight hundred four".