57940191 has 18 divisors (see below), whose sum is σ = 86915712. Its totient is φ = 38622420.

The previous prime is 57940171. The next prime is 57940213. The reversal of 57940191 is 19104975.

It is not a de Polignac number, because 57940191 - 2⁵ = 57940159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57940111) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2146 + ... + 10976.

Almost surely, 2^57940191 is an apocalyptic number.

57940191 is a deficient number, since it is larger than the sum of its proper divisors (28975521).

57940191 is an frugal number, since it uses more digits than its factorization.

57940191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8855 (or 8834 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 57940191 is about 7611.8454398391. The cubic root of 57940191 is about 386.9545647038.

The spelling of 57940191 in words is "fifty-seven million, nine hundred forty thousand, one hundred ninety-one".