4251224 has 16 divisors (see below), whose sum is σ = 8440200. Its totient is φ = 2000512.

The previous prime is 4251223. The next prime is 4251239. The reversal of 4251224 is 4221524.

It is a happy number.

It is a super-3 number, since 3×4251224³ (a number of 21 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4251196 and 4251205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4251223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15494 + ... + 15765.

Almost surely, 2^4251224 is an apocalyptic number.

It is an amenable number.

4251224 is a deficient number, since it is larger than the sum of its proper divisors (4188976).

4251224 is a wasteful number, since it uses less digits than its factorization.

4251224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31282 (or 31278 counting only the distinct ones).

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

The square root of 4251224 is about 2061.8496550428. The cubic root of 4251224 is about 161.9961387079.

Adding to 4251224 its reverse (4221524), we get a palindrome (8472748).

The spelling of 4251224 in words is "four million, two hundred fifty-one thousand, two hundred twenty-four".