2557898 has 24 divisors (see below), whose sum is σ = 4574592. Its totient is φ = 1068984.

The previous prime is 2557897. The next prime is 2557901. The reversal of 2557898 is 8987552.

2557898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2557897) 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 11 ways as a sum of consecutive naturals, for example, 3911 + ... + 4517.

It is an arithmetic number, because the mean of its divisors is an integer number (190608).

2^2557898 is an apocalyptic number.

2557898 is a deficient number, since it is larger than the sum of its proper divisors (2016694).

2557898 is a wasteful number, since it uses less digits than its factorization.

2557898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666 (or 659 counting only the distinct ones).

The product of its digits is 201600, while the sum is 44.

The square root of 2557898 is about 1599.3429901056. The cubic root of 2557898 is about 136.7606241335.

The spelling of 2557898 in words is "two million, five hundred fifty-seven thousand, eight hundred ninety-eight".