45443520 has 168 divisors, whose sum is σ = 161665920. Its totient is φ = 11704320.

The previous prime is 45443477. The next prime is 45443527. The reversal of 45443520 is 2534454.

It is a super-2 number, since 2×45443520² = 4130227019980800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45443527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89026 + ... + 89534.

Almost surely, 2^45443520 is an apocalyptic number.

45443520 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 45443520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80832960).

45443520 is an abundant number, since it is smaller than the sum of its proper divisors (116222400).

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

45443520 is a wasteful number, since it uses less digits than its factorization.

45443520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563 (or 550 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 45443520 is about 6741.1809054497. The cubic root of 45443520 is about 356.8540702441.

Adding to 45443520 its reverse (2534454), we get a palindrome (47977974).

The spelling of 45443520 in words is "forty-five million, four hundred forty-three thousand, five hundred twenty".