4248521 has 8 divisors (see below), whose sum is σ = 4554144. Its totient is φ = 3949120.

The previous prime is 4248481. The next prime is 4248539. The reversal of 4248521 is 1258424.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 4248521 - 2¹⁸ = 3986377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4248551) 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, 95 + ... + 2916.

It is an arithmetic number, because the mean of its divisors is an integer number (569268).

Almost surely, 2^4248521 is an apocalyptic number.

It is an amenable number.

4248521 is a deficient number, since it is larger than the sum of its proper divisors (305623).

4248521 is a wasteful number, since it uses less digits than its factorization.

4248521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3111.

The product of its digits is 2560, while the sum is 26.

The square root of 4248521 is about 2061.1940714062. The cubic root of 4248521 is about 161.9617981354.

The spelling of 4248521 in words is "four million, two hundred forty-eight thousand, five hundred twenty-one".