128455573 has 4 divisors (see below), whose sum is σ = 129243808. Its totient is φ = 127667340.

The previous prime is 128455571. The next prime is 128455597. The reversal of 128455573 is 375554821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 375554821 = 18301 ⋅20521.

It is a cyclic number.

It is not a de Polignac number, because 128455573 - 2¹ = 128455571 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128455571) 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 in 3 ways as a sum of consecutive naturals, for example, 393873 + ... + 394198.

It is an arithmetic number, because the mean of its divisors is an integer number (32310952).

Almost surely, 2^128455573 is an apocalyptic number.

It is an amenable number.

128455573 is a deficient number, since it is larger than the sum of its proper divisors (788235).

128455573 is an equidigital number, since it uses as much as digits as its factorization.

128455573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788234.

The product of its digits is 168000, while the sum is 40.

The square root of 128455573 is about 11333.8242883856. The cubic root of 128455573 is about 504.5656141097.

The spelling of 128455573 in words is "one hundred twenty-eight million, four hundred fifty-five thousand, five hundred seventy-three".