211057 has 8 divisors (see below), whose sum is σ = 263232. Its totient is φ = 164400.

The previous prime is 211051. The next prime is 211061. The reversal of 211057 is 750112.

211057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 211057 - 2³ = 211049 is a prime.

It is a Duffinian number.

211057 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 211057.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1294 + ... + 1447.

It is an arithmetic number, because the mean of its divisors is an integer number (32904).

2²¹¹⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

211057 is a deficient number, since it is larger than the sum of its proper divisors (52175).

211057 is a wasteful number, since it uses less digits than its factorization.

211057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2759.

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

The square root of 211057 is about 459.4094034736. The cubic root of 211057 is about 59.5387784779.

Adding to 211057 its reverse (750112), we get a palindrome (961169).

It can be divided in two parts, 21105 and 7, that added together give a palindrome (21112).

The spelling of 211057 in words is "two hundred eleven thousand, fifty-seven".