43252145 has 4 divisors (see below), whose sum is σ = 51902580. Its totient is φ = 34601712.

The previous prime is 43252129. The next prime is 43252163. The reversal of 43252145 is 54125234.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54125234 = 2 ⋅27062617.

It can be written as a sum of positive squares in 2 ways, for example, as 29084449 + 14167696 = 5393^2 + 3764^2 .

It is a cyclic number.

It is not a de Polignac number, because 43252145 - 2⁴ = 43252129 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4325210 + ... + 4325219.

It is an arithmetic number, because the mean of its divisors is an integer number (12975645).

Almost surely, 2^43252145 is an apocalyptic number.

It is an amenable number.

43252145 is a deficient number, since it is larger than the sum of its proper divisors (8650435).

43252145 is an equidigital number, since it uses as much as digits as its factorization.

43252145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8650434.

The product of its digits is 4800, while the sum is 26.

The square root of 43252145 is about 6576.6362982911. The cubic root of 43252145 is about 351.0232504356.

Adding to 43252145 its reverse (54125234), we get a palindrome (97377379).

The spelling of 43252145 in words is "forty-three million, two hundred fifty-two thousand, one hundred forty-five".