4253521 has 4 divisors (see below), whose sum is σ = 4257792. Its totient is φ = 4249252.

The previous prime is 4253489. The next prime is 4253531. The reversal of 4253521 is 1253524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4253521 - 2⁵ = 4253489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4253492 and 4253501.

It is not an unprimeable number, because it can be changed into a prime (4253531) 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, 240 + ... + 2926.

It is an arithmetic number, because the mean of its divisors is an integer number (1064448).

Almost surely, 2^4253521 is an apocalyptic number.

It is an amenable number.

4253521 is a deficient number, since it is larger than the sum of its proper divisors (4271).

4253521 is a wasteful number, since it uses less digits than its factorization.

4253521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4270.

The product of its digits is 1200, while the sum is 22.

The square root of 4253521 is about 2062.4066039460. The cubic root of 4253521 is about 162.0253097681.

It can be divided in two parts, 4253 and 521, that added together give a palindrome (4774).

The spelling of 4253521 in words is "four million, two hundred fifty-three thousand, five hundred twenty-one".