2557884857 has 8 divisors (see below), whose sum is σ = 2791368192. Its totient is φ = 2324559600.

The previous prime is 2557884827. The next prime is 2557884871. The reversal of 2557884857 is 7584887552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2557884857 - 2⁶ = 2557884793 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2557884796 and 2557884805.

It is not an unprimeable number, because it can be changed into a prime (2557884817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4313 + ... + 71654.

It is an arithmetic number, because the mean of its divisors is an integer number (348921024).

Almost surely, 2^2557884857 is an apocalyptic number.

It is an amenable number.

2557884857 is a deficient number, since it is larger than the sum of its proper divisors (233483335).

2557884857 is a wasteful number, since it uses less digits than its factorization.

2557884857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79039.

The product of its digits is 25088000, while the sum is 59.

The square root of 2557884857 is about 50575.5361513845. The cubic root of 2557884857 is about 1367.6038989847.

The spelling of 2557884857 in words is "two billion, five hundred fifty-seven million, eight hundred eighty-four thousand, eight hundred fifty-seven".