43221461 has 4 divisors (see below), whose sum is σ = 43240800. Its totient is φ = 43202124.

The previous prime is 43221457. The next prime is 43221469. The reversal of 43221461 is 16412234.

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: 16412234 = 2 ⋅8206117.

It is a cyclic number.

It is not a de Polignac number, because 43221461 - 2² = 43221457 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 (43221469) 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, 5801 + ... + 10958.

It is an arithmetic number, because the mean of its divisors is an integer number (10810200).

Almost surely, 2^43221461 is an apocalyptic number.

It is an amenable number.

43221461 is a deficient number, since it is larger than the sum of its proper divisors (19339).

43221461 is a wasteful number, since it uses less digits than its factorization.

43221461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19338.

The product of its digits is 1152, while the sum is 23.

The square root of 43221461 is about 6574.3030809357. The cubic root of 43221461 is about 350.9402229894.

Adding to 43221461 its reverse (16412234), we get a palindrome (59633695).

The spelling of 43221461 in words is "forty-three million, two hundred twenty-one thousand, four hundred sixty-one".