2233521 has 8 divisors (see below), whose sum is σ = 3308960. Its totient is φ = 1488996.

The previous prime is 2233513. The next prime is 2233523. The reversal of 2233521 is 1253322.

It is not a de Polignac number, because 2233521 - 2³ = 2233513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2233494 and 2233503.

It is not an unprimeable number, because it can be changed into a prime (2233523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41335 + ... + 41388.

It is an arithmetic number, because the mean of its divisors is an integer number (413620).

2^2233521 is an apocalyptic number.

It is an amenable number.

2233521 is a deficient number, since it is larger than the sum of its proper divisors (1075439).

2233521 is an equidigital number, since it uses as much as digits as its factorization.

2233521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82732 (or 82726 counting only the distinct ones).

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

The square root of 2233521 is about 1494.4969053163. The cubic root of 2233521 is about 130.7163803557.

Adding to 2233521 its reverse (1253322), we get a palindrome (3486843).

The spelling of 2233521 in words is "two million, two hundred thirty-three thousand, five hundred twenty-one".