43145222 has 4 divisors (see below), whose sum is σ = 64717836. Its totient is φ = 21572610.

The previous prime is 43145191. The next prime is 43145237. The reversal of 43145222 is 22254134.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10786304 + ... + 10786307.

It is an arithmetic number, because the mean of its divisors is an integer number (16179459).

Almost surely, 2^43145222 is an apocalyptic number.

43145222 is a deficient number, since it is larger than the sum of its proper divisors (21572614).

43145222 is a wasteful number, since it uses less digits than its factorization.

43145222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21572613.

The product of its digits is 1920, while the sum is 23.

The square root of 43145222 is about 6568.5022645958. The cubic root of 43145222 is about 350.7337585937.

Adding to 43145222 its reverse (22254134), we get a palindrome (65399356).

The spelling of 43145222 in words is "forty-three million, one hundred forty-five thousand, two hundred twenty-two".