2557859 has 4 divisors (see below), whose sum is σ = 2596104. Its totient is φ = 2519616.

The previous prime is 2557843. The next prime is 2557861. The reversal of 2557859 is 9587552.

2557859 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 2557859 - 2⁴ = 2557843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2557879) 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, 19022 + ... + 19155.

It is an arithmetic number, because the mean of its divisors is an integer number (649026).

2^2557859 is an apocalyptic number.

2557859 is a deficient number, since it is larger than the sum of its proper divisors (38245).

2557859 is an equidigital number, since it uses as much as digits as its factorization.

2557859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38244.

The product of its digits is 126000, while the sum is 41.

The square root of 2557859 is about 1599.3307975525. The cubic root of 2557859 is about 136.7599290717.

The spelling of 2557859 in words is "two million, five hundred fifty-seven thousand, eight hundred fifty-nine".