2213522 has 4 divisors (see below), whose sum is σ = 3320286. Its totient is φ = 1106760.

The previous prime is 2213489. The next prime is 2213531. The reversal of 2213522 is 2253122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2253122 = 2 ⋅1126561.

It can be written as a sum of positive squares in only one way, i.e., 1852321 + 361201 = 1361^2 + 601^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2213522.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 553379 + ... + 553382.

2^2213522 is an apocalyptic number.

2213522 is a deficient number, since it is larger than the sum of its proper divisors (1106764).

2213522 is a wasteful number, since it uses less digits than its factorization.

2213522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106763.

The product of its digits is 240, while the sum is 17.

The square root of 2213522 is about 1487.7909799431. The cubic root of 2213522 is about 130.3250642134.

Adding to 2213522 its reverse (2253122), we get a palindrome (4466644).

The spelling of 2213522 in words is "two million, two hundred thirteen thousand, five hundred twenty-two".