4455521 has 12 divisors (see below), whose sum is σ = 5253120. Its totient is φ = 3767400.

The previous prime is 4455509. The next prime is 4455527. The reversal of 4455521 is 1255544.

It is not a de Polignac number, because 4455521 - 2¹⁴ = 4439137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4455527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3296 + ... + 4446.

It is an arithmetic number, because the mean of its divisors is an integer number (437760).

Almost surely, 2^4455521 is an apocalyptic number.

It is an amenable number.

4455521 is a deficient number, since it is larger than the sum of its proper divisors (797599).

4455521 is a wasteful number, since it uses less digits than its factorization.

4455521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244 (or 1237 counting only the distinct ones).

The product of its digits is 4000, while the sum is 26.

The square root of 4455521 is about 2110.8105078382. The cubic root of 4455521 is about 164.5506106534.

The spelling of 4455521 in words is "four million, four hundred fifty-five thousand, five hundred twenty-one".