43117145 has 4 divisors (see below), whose sum is σ = 51740580. Its totient is φ = 34493712.

The previous prime is 43117133. The next prime is 43117153. The reversal of 43117145 is 54171134.

43117145 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 an emirpimes, since its reverse is a distinct semiprime: 54171134 = 2 ⋅27085567.

It can be written as a sum of positive squares in 2 ways, for example, as 9616201 + 33500944 = 3101^2 + 5788^2 .

It is a cyclic number.

It is not a de Polignac number, because 43117145 - 2⁸ = 43116889 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 4311710 + ... + 4311719.

It is an arithmetic number, because the mean of its divisors is an integer number (12935145).

Almost surely, 2^43117145 is an apocalyptic number.

It is an amenable number.

43117145 is a deficient number, since it is larger than the sum of its proper divisors (8623435).

43117145 is an equidigital number, since it uses as much as digits as its factorization.

43117145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8623434.

The product of its digits is 1680, while the sum is 26.

The square root of 43117145 is about 6566.3646715668. The cubic root of 43117145 is about 350.6576614179.

Adding to 43117145 its reverse (54171134), we get a palindrome (97288279).

It can be divided in two parts, 431 and 17145, that added together give a cube (17576 = 26³).

The spelling of 43117145 in words is "forty-three million, one hundred seventeen thousand, one hundred forty-five".