424128553 has 2 divisors, whose sum is σ = 424128554. Its totient is φ = 424128552.

The previous prime is 424128541. The next prime is 424128569. The reversal of 424128553 is 355821424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 302864409 + 121264144 = 17403^2 + 11012^2 .

It is a cyclic number.

It is not a de Polignac number, because 424128553 - 2⁹ = 424128041 is a prime.

It is not a weakly prime, because it can be changed into another prime (424128853) 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, 212064276 + 212064277.

It is an arithmetic number, because the mean of its divisors is an integer number (212064277).

Almost surely, 2^424128553 is an apocalyptic number.

It is an amenable number.

424128553 is a deficient number, since it is larger than the sum of its proper divisors (1).

424128553 is an equidigital number, since it uses as much as digits as its factorization.

424128553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38400, while the sum is 34.

The square root of 424128553 is about 20594.3815881905. The cubic root of 424128553 is about 751.3330679840. Note that the first 3 decimals are identical.

Adding to 424128553 its reverse (355821424), we get a palindrome (779949977).

The spelling of 424128553 in words is "four hundred twenty-four million, one hundred twenty-eight thousand, five hundred fifty-three".