43661105 has 8 divisors (see below), whose sum is σ = 53671464. Its totient is φ = 34076800.

The previous prime is 43661099. The next prime is 43661119. The reversal of 43661105 is 50116634.

43661105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2611456 + 41049649 = 1616^2 + 6407^2 .

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

It is not a de Polignac number, because 43661105 - 2⁴ = 43661089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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, 106286 + ... + 106695.

It is an arithmetic number, because the mean of its divisors is an integer number (6708933).

Almost surely, 2^43661105 is an apocalyptic number.

It is an amenable number.

43661105 is a deficient number, since it is larger than the sum of its proper divisors (10010359).

43661105 is a wasteful number, since it uses less digits than its factorization.

43661105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213027.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 43661105 is about 6607.6550303417. The cubic root of 43661105 is about 352.1261196869.

Adding to 43661105 its reverse (50116634), we get a palindrome (93777739).

The spelling of 43661105 in words is "forty-three million, six hundred sixty-one thousand, one hundred five".