43157229 has 8 divisors (see below), whose sum is σ = 57588960. Its totient is φ = 28748496.

The previous prime is 43157221. The next prime is 43157243. The reversal of 43157229 is 92275134.

43157229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 43157229 - 2³ = 43157221 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 43157229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43157221) 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 7 ways as a sum of consecutive naturals, for example, 747 + ... + 9320.

It is an arithmetic number, because the mean of its divisors is an integer number (7198620).

Almost surely, 2^43157229 is an apocalyptic number.

It is an amenable number.

43157229 is a deficient number, since it is larger than the sum of its proper divisors (14431731).

43157229 is a wasteful number, since it uses less digits than its factorization.

43157229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11499.

The product of its digits is 15120, while the sum is 33.

The square root of 43157229 is about 6569.4161841065. The cubic root of 43157229 is about 350.7662911234.

The spelling of 43157229 in words is "forty-three million, one hundred fifty-seven thousand, two hundred twenty-nine".