57191 has 2 divisors, whose sum is σ = 57192. Its totient is φ = 57190.

The previous prime is 57179. The next prime is 57193. The reversal of 57191 is 19175.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57191 - 2¹⁰ = 56167 is a prime.

Together with 57193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28595 + 28596.

It is an arithmetic number, because the mean of its divisors is an integer number (28596).

2⁵⁷¹⁹¹ is an apocalyptic number.

57191 is a deficient number, since it is larger than the sum of its proper divisors (1).

57191 is an equidigital number, since it uses as much as digits as its factorization.

57191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 315, while the sum is 23.

The square root of 57191 is about 239.1463986766. The cubic root of 57191 is about 38.5279495704.

The spelling of 57191 in words is "fifty-seven thousand, one hundred ninety-one".