43538087 has 4 divisors (see below), whose sum is σ = 43604616. Its totient is φ = 43471560.

The previous prime is 43538083. The next prime is 43538107. The reversal of 43538087 is 78083534.

It is a happy number.

43538087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78083534 = 2 ⋅39041767.

It is a cyclic number.

It is not a de Polignac number, because 43538087 - 2² = 43538083 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43538087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43538083) 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 3 ways as a sum of consecutive naturals, for example, 32273 + ... + 33594.

It is an arithmetic number, because the mean of its divisors is an integer number (10901154).

Almost surely, 2^43538087 is an apocalyptic number.

43538087 is a deficient number, since it is larger than the sum of its proper divisors (66529).

43538087 is an equidigital number, since it uses as much as digits as its factorization.

43538087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66528.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 43538087 is about 6598.3397154133. The cubic root of 43538087 is about 351.7950958583.

The spelling of 43538087 in words is "forty-three million, five hundred thirty-eight thousand, eighty-seven".