128275057 has 2 divisors, whose sum is σ = 128275058. Its totient is φ = 128275056.

The previous prime is 128275039. The next prime is 128275087. The reversal of 128275057 is 750572821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121969936 + 6305121 = 11044^2 + 2511^2 .

It is an emirp because it is prime and its reverse (750572821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128275057 - 2¹⁹ = 127750769 is a prime.

It is not a weakly prime, because it can be changed into another prime (128275087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64137528 + 64137529.

It is an arithmetic number, because the mean of its divisors is an integer number (64137529).

Almost surely, 2^128275057 is an apocalyptic number.

It is an amenable number.

128275057 is a deficient number, since it is larger than the sum of its proper divisors (1).

128275057 is an equidigital number, since it uses as much as digits as its factorization.

128275057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 128275057 is about 11325.8578924512. The cubic root of 128275057 is about 504.3291513832.

The spelling of 128275057 in words is "one hundred twenty-eight million, two hundred seventy-five thousand, fifty-seven".