4350221 has 4 divisors (see below), whose sum is σ = 4579200. Its totient is φ = 4121244.

The previous prime is 4350217. The next prime is 4350251. The reversal of 4350221 is 1220534.

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 not a de Polignac number, because 4350221 - 2² = 4350217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4350221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4350251) 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, 114461 + ... + 114498.

It is an arithmetic number, because the mean of its divisors is an integer number (1144800).

Almost surely, 2^4350221 is an apocalyptic number.

It is an amenable number.

4350221 is a deficient number, since it is larger than the sum of its proper divisors (228979).

4350221 is a wasteful number, since it uses less digits than its factorization.

4350221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228978.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 4350221 is about 2085.7183414833. The cubic root of 4350221 is about 163.2439545238.

Adding to 4350221 its reverse (1220534), we get a palindrome (5570755).

The spelling of 4350221 in words is "four million, three hundred fifty thousand, two hundred twenty-one".