43215147 has 16 divisors (see below), whose sum is σ = 66088960. Its totient is φ = 27880200.

The previous prime is 43215131. The next prime is 43215157. The reversal of 43215147 is 74151234.

43215147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43215147 - 2⁴ = 43215131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 43215147.

It is not an unprimeable number, because it can be changed into a prime (43215157) 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, 24979 + ... + 26652.

It is an arithmetic number, because the mean of its divisors is an integer number (4130560).

Almost surely, 2^43215147 is an apocalyptic number.

43215147 is a deficient number, since it is larger than the sum of its proper divisors (22873813).

43215147 is a wasteful number, since it uses less digits than its factorization.

43215147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51671 (or 51665 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 43215147 is about 6573.8228604063. The cubic root of 43215147 is about 350.9231331423.

The spelling of 43215147 in words is "forty-three million, two hundred fifteen thousand, one hundred forty-seven".