4521224 has 16 divisors (see below), whose sum is σ = 8506620. Its totient is φ = 2252800.

The previous prime is 4521217. The next prime is 4521241. The reversal of 4521224 is 4221254.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4072324 + 448900 = 2018^2 + 670^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4521196 and 4521205.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2024 + ... + 3624.

Almost surely, 2^4521224 is an apocalyptic number.

It is an amenable number.

4521224 is a deficient number, since it is larger than the sum of its proper divisors (3985396).

4521224 is a wasteful number, since it uses less digits than its factorization.

4521224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1960 (or 1956 counting only the distinct ones).

The product of its digits is 640, while the sum is 20.

The square root of 4521224 is about 2126.3170036474. The cubic root of 4521224 is about 165.3555113907.

Adding to 4521224 its reverse (4221254), we get a palindrome (8742478).

The spelling of 4521224 in words is "four million, five hundred twenty-one thousand, two hundred twenty-four".