43223145 has 64 divisors (see below), whose sum is σ = 83558400. Its totient is φ = 19051200.

The previous prime is 43223113. The next prime is 43223149. The reversal of 43223145 is 54132234.

It is not a de Polignac number, because 43223145 - 2⁵ = 43223113 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43223149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 159360 + ... + 159630.

It is an arithmetic number, because the mean of its divisors is an integer number (1305600).

Almost surely, 2^43223145 is an apocalyptic number.

It is an amenable number.

43223145 is a deficient number, since it is larger than the sum of its proper divisors (40335255).

43223145 is a wasteful number, since it uses less digits than its factorization.

43223145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331 (or 317 counting only the distinct ones).

The product of its digits is 2880, while the sum is 24.

The square root of 43223145 is about 6574.4311540999. The cubic root of 43223145 is about 350.9447807225.

Adding to 43223145 its reverse (54132234), we get a palindrome (97355379).

The spelling of 43223145 in words is "forty-three million, two hundred twenty-three thousand, one hundred forty-five".