32253221 has 24 divisors (see below), whose sum is σ = 44087904. Its totient is φ = 23194080.

The previous prime is 32253217. The next prime is 32253223. The reversal of 32253221 is 12235223.

It is not a de Polignac number, because 32253221 - 2² = 32253217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 32253193 and 32253202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32253223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4706 + ... + 9308.

It is an arithmetic number, because the mean of its divisors is an integer number (1836996).

Almost surely, 2^32253221 is an apocalyptic number.

It is an amenable number.

32253221 is a deficient number, since it is larger than the sum of its proper divisors (11834683).

32253221 is a wasteful number, since it uses less digits than its factorization.

32253221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4641 (or 4634 counting only the distinct ones).

The product of its digits is 720, while the sum is 20.

The square root of 32253221 is about 5679.1919319565. The cubic root of 32253221 is about 318.3154346694.

Adding to 32253221 its reverse (12235223), we get a palindrome (44488444).

It can be divided in two parts, 3225 and 3221, that added together give a palindrome (6446).

The spelling of 32253221 in words is "thirty-two million, two hundred fifty-three thousand, two hundred twenty-one".