43253149 has 4 divisors (see below), whose sum is σ = 43681500. Its totient is φ = 42824800.

The previous prime is 43253137. The next prime is 43253159. The reversal of 43253149 is 94135234.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28676025 + 14577124 = 5355^2 + 3818^2 .

It is a cyclic number.

It is not a de Polignac number, because 43253149 - 2⁹ = 43252637 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 43253149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43253159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214024 + ... + 214225.

It is an arithmetic number, because the mean of its divisors is an integer number (10920375).

Almost surely, 2^43253149 is an apocalyptic number.

It is an amenable number.

43253149 is a deficient number, since it is larger than the sum of its proper divisors (428351).

43253149 is a wasteful number, since it uses less digits than its factorization.

43253149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428350.

The product of its digits is 12960, while the sum is 31.

The square root of 43253149 is about 6576.7126286618. The cubic root of 43253149 is about 351.0259664829.

The spelling of 43253149 in words is "forty-three million, two hundred fifty-three thousand, one hundred forty-nine".