43878057 has 16 divisors (see below), whose sum is σ = 59304960. Its totient is φ = 28854800.

The previous prime is 43878031. The next prime is 43878061. The reversal of 43878057 is 75087834.

43878057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 43878057 - 2¹⁰ = 43877033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43878067) 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, 122044 + ... + 122402.

It is an arithmetic number, because the mean of its divisors is an integer number (3706560).

Almost surely, 2^43878057 is an apocalyptic number.

It is an amenable number.

43878057 is a deficient number, since it is larger than the sum of its proper divisors (15426903).

43878057 is a wasteful number, since it uses less digits than its factorization.

43878057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804.

The product of its (nonzero) digits is 188160, while the sum is 42.

The square root of 43878057 is about 6624.0514037861. The cubic root of 43878057 is about 352.7083944552.

The spelling of 43878057 in words is "forty-three million, eight hundred seventy-eight thousand, fifty-seven".