4221315 has 40 divisors (see below), whose sum is σ = 8653920. Its totient is φ = 1928448.

The previous prime is 4221313. The next prime is 4221323. The reversal of 4221315 is 5131224.

It is not a de Polignac number, because 4221315 - 2¹ = 4221313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4221311) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2091 + ... + 3579.

It is an arithmetic number, because the mean of its divisors is an integer number (216348).

Almost surely, 2^4221315 is an apocalyptic number.

4221315 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4221315 is an abundant number, since it is smaller than the sum of its proper divisors (4432605).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4221315 is a wasteful number, since it uses less digits than its factorization.

4221315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513 (or 1504 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 4221315 is about 2054.5838994794. The cubic root of 4221315 is about 161.6153425251.

Adding to 4221315 its reverse (5131224), we get a palindrome (9352539).

Subtracting 4221315 from its reverse (5131224), we obtain a palindrome (909909).

The spelling of 4221315 in words is "four million, two hundred twenty-one thousand, three hundred fifteen".