2204257 has 6 divisors (see below), whose sum is σ = 2422994. Its totient is φ = 2003760.

The previous prime is 2204243. The next prime is 2204269. The reversal of 2204257 is 7524022.

It can be written as a sum of positive squares in only one way, i.e., 1628176 + 576081 = 1276^2 + 759^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2204257 is a prime.

It is a Duffinian number.

2204257 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2204207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8988 + ... + 9229.

2^2204257 is an apocalyptic number.

It is an amenable number.

2204257 is a deficient number, since it is larger than the sum of its proper divisors (218737).

2204257 is a wasteful number, since it uses less digits than its factorization.

2204257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18239 (or 18228 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 2204257 is about 1484.6740382993. The cubic root of 2204257 is about 130.1429787837.

Adding to 2204257 its reverse (7524022), we get a palindrome (9728279).

The spelling of 2204257 in words is "two million, two hundred four thousand, two hundred fifty-seven".