43485121 has 4 divisors (see below), whose sum is σ = 43891632. Its totient is φ = 43078612.

The previous prime is 43485119. The next prime is 43485137. The reversal of 43485121 is 12158434.

43485121 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43485121 - 2¹ = 43485119 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 43485121.

It is not an unprimeable number, because it can be changed into a prime (43485191) 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, 203095 + ... + 203308.

It is an arithmetic number, because the mean of its divisors is an integer number (10972908).

Almost surely, 2^43485121 is an apocalyptic number.

It is an amenable number.

43485121 is a deficient number, since it is larger than the sum of its proper divisors (406511).

43485121 is a wasteful number, since it uses less digits than its factorization.

43485121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406510.

The product of its digits is 3840, while the sum is 28.

The square root of 43485121 is about 6594.3249085862. The cubic root of 43485121 is about 351.6523798942.

The spelling of 43485121 in words is "forty-three million, four hundred eighty-five thousand, one hundred twenty-one".