43222145 has 8 divisors (see below), whose sum is σ = 52083240. Its totient is φ = 34433280.

The previous prime is 43222141. The next prime is 43222163. The reversal of 43222145 is 54122234.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17405584 + 25816561 = 4172^2 + 5081^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 43222145 - 2² = 43222141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43222145.

It is not an unprimeable number, because it can be changed into a prime (43222141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16730 + ... + 19139.

It is an arithmetic number, because the mean of its divisors is an integer number (6510405).

Almost surely, 2^43222145 is an apocalyptic number.

It is an amenable number.

43222145 is a deficient number, since it is larger than the sum of its proper divisors (8861095).

43222145 is a wasteful number, since it uses less digits than its factorization.

43222145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36115.

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

The square root of 43222145 is about 6574.3551014529. The cubic root of 43222145 is about 350.9420742444.

Adding to 43222145 its reverse (54122234), we get a palindrome (97344379).

The spelling of 43222145 in words is "forty-three million, two hundred twenty-two thousand, one hundred forty-five".