4453521 has 4 divisors (see below), whose sum is σ = 5938032. Its totient is φ = 2969012.

The previous prime is 4453517. The next prime is 4453567. The reversal of 4453521 is 1253544.

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.

It is a cyclic number.

It is not a de Polignac number, because 4453521 - 2² = 4453517 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 4453491 and 4453500.

It is not an unprimeable number, because it can be changed into a prime (4453591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 742251 + ... + 742256.

It is an arithmetic number, because the mean of its divisors is an integer number (1484508).

Almost surely, 2^4453521 is an apocalyptic number.

It is an amenable number.

4453521 is a deficient number, since it is larger than the sum of its proper divisors (1484511).

4453521 is a wasteful number, since it uses less digits than its factorization.

4453521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484510.

The product of its digits is 2400, while the sum is 24.

The square root of 4453521 is about 2110.3367029932. The cubic root of 4453521 is about 164.5259857385.

The spelling of 4453521 in words is "four million, four hundred fifty-three thousand, five hundred twenty-one".