43325221 has 4 divisors (see below), whose sum is σ = 44142732. Its totient is φ = 42507712.

The previous prime is 43325213. The next prime is 43325251. The reversal of 43325221 is 12252334.

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 36360900 + 6964321 = 6030^2 + 2639^2 .

It is a cyclic number.

It is not a de Polignac number, because 43325221 - 2³ = 43325213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43325192 and 43325201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43325201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408676 + ... + 408781.

It is an arithmetic number, because the mean of its divisors is an integer number (11035683).

Almost surely, 2^43325221 is an apocalyptic number.

It is an amenable number.

43325221 is a deficient number, since it is larger than the sum of its proper divisors (817511).

43325221 is an equidigital number, since it uses as much as digits as its factorization.

43325221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817510.

The product of its digits is 1440, while the sum is 22.

The square root of 43325221 is about 6582.1896812535. The cubic root of 43325221 is about 351.2208278606.

Adding to 43325221 its reverse (12252334), we get a palindrome (55577555).

The spelling of 43325221 in words is "forty-three million, three hundred twenty-five thousand, two hundred twenty-one".