43222005 has 20 divisors (see below), whose sum is σ = 77480172. Its totient is φ = 23051520.

The previous prime is 43221961. The next prime is 43222033. The reversal of 43222005 is 50022234.

It can be written as a sum of positive squares in 2 ways, for example, as 22071204 + 21150801 = 4698^2 + 4599^2 .

It is a de Polignac number, because none of the positive numbers 2^k-43222005 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 52956 + ... + 53765.

Almost surely, 2^43222005 is an apocalyptic number.

43222005 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

43222005 is a deficient number, since it is larger than the sum of its proper divisors (34258167).

43222005 is a wasteful number, since it uses less digits than its factorization.

43222005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106738 (or 106729 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 43222005 is about 6574.3444540121. The cubic root of 43222005 is about 350.9416953342.

Adding to 43222005 its reverse (50022234), we get a palindrome (93244239).

The spelling of 43222005 in words is "forty-three million, two hundred twenty-two thousand, five".