43053121 has 2 divisors, whose sum is σ = 43053122. Its totient is φ = 43053120.

The previous prime is 43053091. The next prime is 43053149. The reversal of 43053121 is 12135034.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43046721 + 6400 = 6561^2 + 80^2 .

It is a cyclic number.

It is not a de Polignac number, because 43053121 - 2¹⁷ = 42922049 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43050121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21526560 + 21526561.

It is an arithmetic number, because the mean of its divisors is an integer number (21526561).

Almost surely, 2^43053121 is an apocalyptic number.

It is an amenable number.

43053121 is a deficient number, since it is larger than the sum of its proper divisors (1).

43053121 is an equidigital number, since it uses as much as digits as its factorization.

43053121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 43053121 is about 6561.4877124018. The cubic root of 43053121 is about 350.4840133449.

Adding to 43053121 its reverse (12135034), we get a palindrome (55188155).

The spelling of 43053121 in words is "forty-three million, fifty-three thousand, one hundred twenty-one".