4257224 has 8 divisors (see below), whose sum is σ = 7982310. Its totient is φ = 2128608.

The previous prime is 4257223. The next prime is 4257241. The reversal of 4257224 is 4227524.

It can be written as a sum of positive squares in only one way, i.e., 4072324 + 184900 = 2018^2 + 430^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 4257193 and 4257202.

It is not an unprimeable number, because it can be changed into a prime (4257221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266069 + ... + 266084.

Almost surely, 2^4257224 is an apocalyptic number.

It is an amenable number.

4257224 is a deficient number, since it is larger than the sum of its proper divisors (3725086).

4257224 is a wasteful number, since it uses less digits than its factorization.

4257224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532159 (or 532155 counting only the distinct ones).

The product of its digits is 4480, while the sum is 26.

The square root of 4257224 is about 2063.3041462664. The cubic root of 4257224 is about 162.0723144102.

The spelling of 4257224 in words is "four million, two hundred fifty-seven thousand, two hundred twenty-four".