4551045440 has 56 divisors (see below), whose sum is σ = 10868146920. Its totient is φ = 1815216128.

The previous prime is 4551045439. The next prime is 4551045449. The reversal of 4551045440 is 445401554.

It can be written as a sum of positive squares in 4 ways, for example, as 1377300544 + 3173744896 = 37112^2 + 56336^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 4551045397 and 4551045406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4551045449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92816 + ... + 133104.

Almost surely, 2^4551045440 is an apocalyptic number.

4551045440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4551045440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5434073460).

4551045440 is an abundant number, since it is smaller than the sum of its proper divisors (6317101480).

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

4551045440 is a wasteful number, since it uses less digits than its factorization.

4551045440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40659 (or 40649 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 32.

The square root of 4551045440 is about 67461.4366879331. The cubic root of 4551045440 is about 1657.1826988892.

Adding to 4551045440 its reverse (445401554), we get a palindrome (4996446994).

The spelling of 4551045440 in words is "four billion, five hundred fifty-one million, forty-five thousand, four hundred forty".