43354221 has 4 divisors (see below), whose sum is σ = 57805632. Its totient is φ = 28902812.

The previous prime is 43354193. The next prime is 43354229. The reversal of 43354221 is 12245334.

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.

It is a cyclic number.

It is not a de Polignac number, because 43354221 - 2¹⁰ = 43353197 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 43354191 and 43354200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43354229) 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, 7225701 + ... + 7225706.

It is an arithmetic number, because the mean of its divisors is an integer number (14451408).

Almost surely, 2^43354221 is an apocalyptic number.

It is an amenable number.

43354221 is a deficient number, since it is larger than the sum of its proper divisors (14451411).

43354221 is a wasteful number, since it uses less digits than its factorization.

43354221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14451410.

The product of its digits is 2880, while the sum is 24.

The square root of 43354221 is about 6584.3922270776. The cubic root of 43354221 is about 351.2991743145.

Adding to 43354221 its reverse (12245334), we get a palindrome (55599555).

The spelling of 43354221 in words is "forty-three million, three hundred fifty-four thousand, two hundred twenty-one".