4221375 has 16 divisors (see below), whose sum is σ = 7024992. Its totient is φ = 2251200.

The previous prime is 4221361. The next prime is 4221379. The reversal of 4221375 is 5731224.

4221375 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4221375 - 2⁶ = 4221311 is a prime.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5254 + ... + 6003.

It is an arithmetic number, because the mean of its divisors is an integer number (439062).

Almost surely, 2^4221375 is an apocalyptic number.

4221375 is a deficient number, since it is larger than the sum of its proper divisors (2803617).

4221375 is a wasteful number, since it uses less digits than its factorization.

4221375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11275 (or 11265 counting only the distinct ones).

The product of its digits is 1680, while the sum is 24.

The square root of 4221375 is about 2054.5985009242. The cubic root of 4221375 is about 161.6161082324.

Adding to 4221375 its reverse (5731224), we get a palindrome (9952599).

The spelling of 4221375 in words is "four million, two hundred twenty-one thousand, three hundred seventy-five".