43346221 has 4 divisors (see below), whose sum is σ = 43444512. Its totient is φ = 43247932.

The previous prime is 43346207. The next prime is 43346231. The reversal of 43346221 is 12264334.

43346221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12264334 = 2 ⋅6132167.

It is a cyclic number.

It is not a de Polignac number, because 43346221 - 2⁵ = 43346189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43346231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48481 + ... + 49366.

It is an arithmetic number, because the mean of its divisors is an integer number (10861128).

Almost surely, 2^43346221 is an apocalyptic number.

It is an amenable number.

43346221 is a deficient number, since it is larger than the sum of its proper divisors (98291).

43346221 is an equidigital number, since it uses as much as digits as its factorization.

43346221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98290.

The product of its digits is 3456, while the sum is 25.

The square root of 43346221 is about 6583.7847018261. The cubic root of 43346221 is about 351.2775649901.

The spelling of 43346221 in words is "forty-three million, three hundred forty-six thousand, two hundred twenty-one".