4235221 has 4 divisors (see below), whose sum is σ = 4294944. Its totient is φ = 4175500.

The previous prime is 4235201. The next prime is 4235237. The reversal of 4235221 is 1225324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4235221 is a prime.

It is a d-powerful number, because it can be written as 4⁶ + 2⁷ + 3⁹ + 5⁴ + 2¹⁴ + 2²² + 1 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4235201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29755 + ... + 29896.

It is an arithmetic number, because the mean of its divisors is an integer number (1073736).

Almost surely, 2^4235221 is an apocalyptic number.

It is an amenable number.

4235221 is a deficient number, since it is larger than the sum of its proper divisors (59723).

4235221 is an equidigital number, since it uses as much as digits as its factorization.

4235221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59722.

The product of its digits is 480, while the sum is 19.

The square root of 4235221 is about 2057.9652572383. The cubic root of 4235221 is about 161.7926142689.

It can be divided in two parts, 4 and 235221, that added together give a square (235225 = 485²).

The spelling of 4235221 in words is "four million, two hundred thirty-five thousand, two hundred twenty-one".