4785221 has 4 divisors (see below), whose sum is σ = 5468832. Its totient is φ = 4101612.

The previous prime is 4785197. The next prime is 4785227. The reversal of 4785221 is 1225874.

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-4785221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4785227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341795 + ... + 341808.

It is an arithmetic number, because the mean of its divisors is an integer number (1367208).

Almost surely, 2^4785221 is an apocalyptic number.

It is an amenable number.

4785221 is a deficient number, since it is larger than the sum of its proper divisors (683611).

4785221 is an equidigital number, since it uses as much as digits as its factorization.

4785221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683610.

The product of its digits is 4480, while the sum is 29.

The square root of 4785221 is about 2187.5147999499. The cubic root of 4785221 is about 168.5132288040.

The spelling of 4785221 in words is "four million, seven hundred eighty-five thousand, two hundred twenty-one".