4221546 has 48 divisors (see below), whose sum is σ = 9997344. Its totient is φ = 1184736.

The previous prime is 4221541. The next prime is 4221551. The reversal of 4221546 is 6451224.

It is an interprime number because it is at equal distance from previous prime (4221541) and next prime (4221551).

It is not an unprimeable number, because it can be changed into a prime (4221541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24316 + ... + 24488.

It is an arithmetic number, because the mean of its divisors is an integer number (208278).

Almost surely, 2^4221546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4221546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4998672).

4221546 is an abundant number, since it is smaller than the sum of its proper divisors (5775798).

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

4221546 is a wasteful number, since it uses less digits than its factorization.

4221546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275 (or 268 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 4221546 is about 2054.6401144726. The cubic root of 4221546 is about 161.6182904583.

The spelling of 4221546 in words is "four million, two hundred twenty-one thousand, five hundred forty-six".