4453445521 has 8 divisors (see below), whose sum is σ = 5090447744. Its totient is φ = 3816642240.

The previous prime is 4453445509. The next prime is 4453445531. The reversal of 4453445521 is 1255443544.

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 4453445521 - 2⁵ = 4453445489 is a prime.

It is a super-2 number, since 2×4453445521² = 39666354017029922882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4453445501) 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, 1801 + ... + 94393.

It is an arithmetic number, because the mean of its divisors is an integer number (636305968).

Almost surely, 2^4453445521 is an apocalyptic number.

It is an amenable number.

4453445521 is a deficient number, since it is larger than the sum of its proper divisors (637002223).

4453445521 is an equidigital number, since it uses as much as digits as its factorization.

4453445521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99471.

The product of its digits is 192000, while the sum is 37.

The square root of 4453445521 is about 66734.1405953504. The cubic root of 4453445521 is about 1645.2505626219.

The spelling of 4453445521 in words is "four billion, four hundred fifty-three million, four hundred forty-five thousand, five hundred twenty-one".