4257215 has 8 divisors (see below), whose sum is σ = 5227728. Its totient is φ = 3326400.

The previous prime is 4257203. The next prime is 4257217. The reversal of 4257215 is 5127524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4257215 - 2¹⁰ = 4256191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4257217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9686 + ... + 10115.

It is an arithmetic number, because the mean of its divisors is an integer number (653466).

Almost surely, 2^4257215 is an apocalyptic number.

4257215 is a deficient number, since it is larger than the sum of its proper divisors (970513).

4257215 is a wasteful number, since it uses less digits than its factorization.

4257215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19849.

The product of its digits is 2800, while the sum is 26.

The square root of 4257215 is about 2063.3019652974. The cubic root of 4257215 is about 162.0722002003.

The spelling of 4257215 in words is "four million, two hundred fifty-seven thousand, two hundred fifteen".