43425553 has 2 divisors, whose sum is σ = 43425554. Its totient is φ = 43425552.

The previous prime is 43425539. The next prime is 43425559. The reversal of 43425553 is 35552434.

It is a happy number.

43425553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28121809 + 15303744 = 5303^2 + 3912^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43425553 is a prime.

It is not a weakly prime, because it can be changed into another prime (43425559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21712776 + 21712777.

It is an arithmetic number, because the mean of its divisors is an integer number (21712777).

Almost surely, 2^43425553 is an apocalyptic number.

It is an amenable number.

43425553 is a deficient number, since it is larger than the sum of its proper divisors (1).

43425553 is an equidigital number, since it uses as much as digits as its factorization.

43425553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36000, while the sum is 31.

The square root of 43425553 is about 6589.8067498220. The cubic root of 43425553 is about 351.4917364327.

Adding to 43425553 its reverse (35552434), we get a palindrome (78977987).

The spelling of 43425553 in words is "forty-three million, four hundred twenty-five thousand, five hundred fifty-three".