57211 has 8 divisors (see below), whose sum is σ = 71424. Its totient is φ = 44520.

The previous prime is 57203. The next prime is 57221. The reversal of 57211 is 11275.

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

It is not a de Polignac number, because 57211 - 2³ = 57203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57221) 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 7 ways as a sum of consecutive naturals, for example, 295 + ... + 448.

It is an arithmetic number, because the mean of its divisors is an integer number (8928).

2⁵⁷²¹¹ is an apocalyptic number.

57211 is a deficient number, since it is larger than the sum of its proper divisors (14213).

57211 is a wasteful number, since it uses less digits than its factorization.

57211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761.

The product of its digits is 70, while the sum is 16.

The square root of 57211 is about 239.1882104118. The cubic root of 57211 is about 38.5324401906.

Adding to 57211 its reverse (11275), we get a palindrome (68486).

The spelling of 57211 in words is "fifty-seven thousand, two hundred eleven".