43046221 has 2 divisors, whose sum is σ = 43046222. Its totient is φ = 43046220.

The previous prime is 43046209. The next prime is 43046233. The reversal of 43046221 is 12264034.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (43046209) and next prime (43046233).

It can be written as a sum of positive squares in only one way, i.e., 42575625 + 470596 = 6525^2 + 686^2 .

It is a cyclic number.

It is not a de Polignac number, because 43046221 - 2¹¹ = 43044173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43046192 and 43046201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43046291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21523110 + 21523111.

It is an arithmetic number, because the mean of its divisors is an integer number (21523111).

Almost surely, 2^43046221 is an apocalyptic number.

It is an amenable number.

43046221 is a deficient number, since it is larger than the sum of its proper divisors (1).

43046221 is an equidigital number, since it uses as much as digits as its factorization.

43046221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 43046221 is about 6560.9618959418. The cubic root of 43046221 is about 350.4652886559.

The spelling of 43046221 in words is "forty-three million, forty-six thousand, two hundred twenty-one".