57881409 has 16 divisors (see below), whose sum is σ = 80771712. Its totient is φ = 36799488.

The previous prime is 57881389. The next prime is 57881437. The reversal of 57881409 is 90418875.

57881409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 57881409 - 2⁷ = 57881281 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (57881449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26337 + ... + 28449.

It is an arithmetic number, because the mean of its divisors is an integer number (5048232).

Almost surely, 2^57881409 is an apocalyptic number.

It is an amenable number.

57881409 is a deficient number, since it is larger than the sum of its proper divisors (22890303).

57881409 is a wasteful number, since it uses less digits than its factorization.

57881409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2536.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 57881409 is about 7607.9832413065. The cubic root of 57881409 is about 386.8236615586.

The spelling of 57881409 in words is "fifty-seven million, eight hundred eighty-one thousand, four hundred nine".