43371161 has 4 divisors (see below), whose sum is σ = 43384932. Its totient is φ = 43357392.

The previous prime is 43371151. The next prime is 43371173. The reversal of 43371161 is 16117334.

43371161 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 brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 8737936 + 34633225 = 2956^2 + 5885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43371161 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 43371161.

It is not an unprimeable number, because it can be changed into a prime (43371101) 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, 431 + ... + 9323.

It is an arithmetic number, because the mean of its divisors is an integer number (10846233).

Almost surely, 2^43371161 is an apocalyptic number.

It is an amenable number.

43371161 is a deficient number, since it is larger than the sum of its proper divisors (13771).

43371161 is an equidigital number, since it uses as much as digits as its factorization.

43371161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13770.

The product of its digits is 1512, while the sum is 26.

The square root of 43371161 is about 6585.6784768162. The cubic root of 43371161 is about 351.3449232863.

Adding to 43371161 its reverse (16117334), we get a palindrome (59488495).

The spelling of 43371161 in words is "forty-three million, three hundred seventy-one thousand, one hundred sixty-one".