43550053 has 2 divisors, whose sum is σ = 43550054. Its totient is φ = 43550052.

The previous prime is 43550041. The next prime is 43550057. The reversal of 43550053 is 35005534.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42745444 + 804609 = 6538^2 + 897^2 .

It is a cyclic number.

It is not a de Polignac number, because 43550053 - 2¹⁷ = 43418981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43550057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21775026 + 21775027.

It is an arithmetic number, because the mean of its divisors is an integer number (21775027).

Almost surely, 2^43550053 is an apocalyptic number.

It is an amenable number.

43550053 is a deficient number, since it is larger than the sum of its proper divisors (1).

43550053 is an equidigital number, since it uses as much as digits as its factorization.

43550053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 43550053 is about 6599.2463963698. The cubic root of 43550053 is about 351.8273220065.

Adding to 43550053 its reverse (35005534), we get a palindrome (78555587).

The spelling of 43550053 in words is "forty-three million, five hundred fifty thousand, fifty-three".