43552240 has 20 divisors (see below), whose sum is σ = 101259144. Its totient is φ = 17420864.

The previous prime is 43552193. The next prime is 43552247. The reversal of 43552240 is 4225534.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43552247) 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, 272122 + ... + 272281.

Almost surely, 2^43552240 is an apocalyptic number.

43552240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43552240 is an abundant number, since it is smaller than the sum of its proper divisors (57706904).

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

43552240 is a wasteful number, since it uses less digits than its factorization.

43552240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544416 (or 544410 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 43552240 is about 6599.4120950279. The cubic root of 43552240 is about 351.8332112720.

Adding to 43552240 its reverse (4225534), we get a palindrome (47777774).

The spelling of 43552240 in words is "forty-three million, five hundred fifty-two thousand, two hundred forty".