2557087 has 4 divisors (see below), whose sum is σ = 2753800. Its totient is φ = 2360376.

The previous prime is 2557067. The next prime is 2557099. The reversal of 2557087 is 7807552.

2557087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2557087 - 2¹⁹ = 2032799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2557007) 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 3 ways as a sum of consecutive naturals, for example, 98337 + ... + 98362.

It is an arithmetic number, because the mean of its divisors is an integer number (688450).

2^2557087 is an apocalyptic number.

2557087 is a deficient number, since it is larger than the sum of its proper divisors (196713).

2557087 is a wasteful number, since it uses less digits than its factorization.

2557087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196712.

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 2557087 is about 1599.0894283935. The cubic root of 2557087 is about 136.7461689584.

The spelling of 2557087 in words is "two million, five hundred fifty-seven thousand, eighty-seven".