275128013 has 2 divisors, whose sum is σ = 275128014. Its totient is φ = 275128012.

The previous prime is 275127997. The next prime is 275128019. The reversal of 275128013 is 310821572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196504324 + 78623689 = 14018^2 + 8867^2 .

It is a cyclic number.

It is not a de Polignac number, because 275128013 - 2⁴ = 275127997 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (275128019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137564006 + 137564007.

It is an arithmetic number, because the mean of its divisors is an integer number (137564007).

Almost surely, 2^275128013 is an apocalyptic number.

It is an amenable number.

275128013 is a deficient number, since it is larger than the sum of its proper divisors (1).

275128013 is an equidigital number, since it uses as much as digits as its factorization.

275128013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 275128013 is about 16586.9832398782. The cubic root of 275128013 is about 650.3966123865.

Adding to 275128013 its reverse (310821572), we get a palindrome (585949585).

The spelling of 275128013 in words is "two hundred seventy-five million, one hundred twenty-eight thousand, thirteen".