4221500 has 24 divisors (see below), whose sum is σ = 9220848. Its totient is φ = 1688400.

The previous prime is 4221499. The next prime is 4221521. The reversal of 4221500 is 51224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3722 + ... + 4721.

It is an arithmetic number, because the mean of its divisors is an integer number (384202).

Almost surely, 2^4221500 is an apocalyptic number.

It is an amenable number.

4221500 is an abundant number, since it is smaller than the sum of its proper divisors (4999348).

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

4221500 is a wasteful number, since it uses less digits than its factorization.

4221500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8462 (or 8450 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 4221500 is about 2054.6289202676. The cubic root of 4221500 is about 161.6177034325.

Adding to 4221500 its reverse (51224), we get a palindrome (4272724).

The spelling of 4221500 in words is "four million, two hundred twenty-one thousand, five hundred".