128553193 has 2 divisors, whose sum is σ = 128553194. Its totient is φ = 128553192.

The previous prime is 128553181. The next prime is 128553197. The reversal of 128553193 is 391355821.

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., 87759424 + 40793769 = 9368^2 + 6387^2 .

It is an emirp because it is prime and its reverse (391355821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128553193 is a prime.

It is not a weakly prime, because it can be changed into another prime (128553197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64276596 + 64276597.

It is an arithmetic number, because the mean of its divisors is an integer number (64276597).

Almost surely, 2^128553193 is an apocalyptic number.

It is an amenable number.

128553193 is a deficient number, since it is larger than the sum of its proper divisors (1).

128553193 is an equidigital number, since it uses as much as digits as its factorization.

128553193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 37.

The square root of 128553193 is about 11338.1300486456. The cubic root of 128553193 is about 504.6933968703.

The spelling of 128553193 in words is "one hundred twenty-eight million, five hundred fifty-three thousand, one hundred ninety-three".