43055440 has 40 divisors (see below), whose sum is σ = 100393128. Its totient is φ = 17172480.

The previous prime is 43055429. The next prime is 43055461. The reversal of 43055440 is 4455034.

It can be written as a sum of positive squares in 4 ways, for example, as 10291264 + 32764176 = 3208^2 + 5724^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41164 + ... + 42196.

Almost surely, 2^43055440 is an apocalyptic number.

43055440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43055440 is an abundant number, since it is smaller than the sum of its proper divisors (57337688).

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

43055440 is a wasteful number, since it uses less digits than its factorization.

43055440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567 (or 1561 counting only the distinct ones).

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

The square root of 43055440 is about 6561.6644229951. The cubic root of 43055440 is about 350.4903060194.

The spelling of 43055440 in words is "forty-three million, fifty-five thousand, four hundred forty".