2533221 has 16 divisors (see below), whose sum is σ = 3974400. Its totient is φ = 1589184.

The previous prime is 2533217. The next prime is 2533231. The reversal of 2533221 is 1223352.

It is not a de Polignac number, because 2533221 - 2² = 2533217 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2533194 and 2533203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2533211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2301 + ... + 3218.

It is an arithmetic number, because the mean of its divisors is an integer number (248400).

2^2533221 is an apocalyptic number.

It is an amenable number.

2533221 is a deficient number, since it is larger than the sum of its proper divisors (1441179).

2533221 is a wasteful number, since it uses less digits than its factorization.

2533221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5545 (or 5539 counting only the distinct ones).

The product of its digits is 360, while the sum is 18.

The square root of 2533221 is about 1591.6095626755. The cubic root of 2533221 is about 136.3194085659.

Adding to 2533221 its reverse (1223352), we get a palindrome (3756573).

The spelling of 2533221 in words is "two million, five hundred thirty-three thousand, two hundred twenty-one".