4451543552 has 40 divisors (see below), whose sum is σ = 8926333812. Its totient is φ = 2217779200.

The previous prime is 4451543543. The next prime is 4451543557. The reversal of 4451543552 is 2553451544.

It can be written as a sum of positive squares in 2 ways, for example, as 4449423616 + 2119936 = 66704^2 + 1456^2 .

It is not an unprimeable number, because it can be changed into a prime (4451543557) 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, 128402 + ... + 159342.

Almost surely, 2^4451543552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4451543552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4463166906).

4451543552 is an abundant number, since it is smaller than the sum of its proper divisors (4474790260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4451543552 is an equidigital number, since it uses as much as digits as its factorization.

4451543552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31240 (or 31224 counting only the distinct ones).

The product of its digits is 240000, while the sum is 38.

The square root of 4451543552 is about 66719.8887289240. Note that the first 3 decimals coincide. The cubic root of 4451543552 is about 1645.0163124493.

The spelling of 4451543552 in words is "four billion, four hundred fifty-one million, five hundred forty-three thousand, five hundred fifty-two".