45445040 has 40 divisors (see below), whose sum is σ = 106667280. Its totient is φ = 18004736.

The previous prime is 45445031. The next prime is 45445067. The reversal of 45445040 is 4054454.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5906 + ... + 11214.

It is an arithmetic number, because the mean of its divisors is an integer number (2666682).

Almost surely, 2^45445040 is an apocalyptic number.

45445040 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 45445040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53333640).

45445040 is an abundant number, since it is smaller than the sum of its proper divisors (61222240).

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

45445040 is a wasteful number, since it uses less digits than its factorization.

45445040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5429 (or 5423 counting only the distinct ones).

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

The square root of 45445040 is about 6741.2936443979. The cubic root of 45445040 is about 356.8580488982.

Adding to 45445040 its reverse (4054454), we get a palindrome (49499494).

The spelling of 45445040 in words is "forty-five million, four hundred forty-five thousand, forty".