2213257 has 4 divisors (see below), whose sum is σ = 2221696. Its totient is φ = 2204820.

The previous prime is 2213243. The next prime is 2213279. The reversal of 2213257 is 7523122.

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 a cyclic number.

It is not a de Polignac number, because 2213257 - 2¹⁹ = 1688969 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2211257) 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, 3813 + ... + 4354.

It is an arithmetic number, because the mean of its divisors is an integer number (555424).

2^2213257 is an apocalyptic number.

It is an amenable number.

2213257 is a deficient number, since it is larger than the sum of its proper divisors (8439).

2213257 is an equidigital number, since it uses as much as digits as its factorization.

2213257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8438.

The product of its digits is 840, while the sum is 22.

The square root of 2213257 is about 1487.7019190685. The cubic root of 2213257 is about 130.3198632230.

Adding to 2213257 its reverse (7523122), we get a palindrome (9736379).

The spelling of 2213257 in words is "two million, two hundred thirteen thousand, two hundred fifty-seven".