214257 has 4 divisors (see below), whose sum is σ = 285680. Its totient is φ = 142836.

The previous prime is 214243. The next prime is 214259. The reversal of 214257 is 752412.

214257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 214257 - 2⁷ = 214129 is a prime.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 214257.

It is not an unprimeable number, because it can be changed into a prime (214259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35707 + ... + 35712.

It is an arithmetic number, because the mean of its divisors is an integer number (71420).

2²¹⁴²⁵⁷ is an apocalyptic number.

It is an amenable number.

214257 is a deficient number, since it is larger than the sum of its proper divisors (71423).

214257 is an equidigital number, since it uses as much as digits as its factorization.

214257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71422.

The product of its digits is 560, while the sum is 21.

The square root of 214257 is about 462.8790338739. The cubic root of 214257 is about 59.8381750482.

Adding to 214257 its reverse (752412), we get a palindrome (966669).

It can be divided in two parts, 21 and 4257, that added together give a triangular number (4278 = T₉₂).

The spelling of 214257 in words is "two hundred fourteen thousand, two hundred fifty-seven".