45045440 has 112 divisors (see below), whose sum is σ = 119384064. Its totient is φ = 16051200.

The previous prime is 45045401. The next prime is 45045443. The reversal of 45045440 is 4454054.

45045440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45045443) 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 15 ways as a sum of consecutive naturals, for example, 235745 + ... + 235935.

Almost surely, 2^45045440 is an apocalyptic number.

45045440 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 45045440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59692032).

45045440 is an abundant number, since it is smaller than the sum of its proper divisors (74338624).

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

45045440 is a wasteful number, since it uses less digits than its factorization.

45045440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286 (or 276 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 45045440 is about 6711.5899755572. The cubic root of 45045440 is about 355.8090125678.

Adding to 45045440 its reverse (4454054), we get a palindrome (49499494).

The spelling of 45045440 in words is "forty-five million, forty-five thousand, four hundred forty".