1355174232257 has 2 divisors, whose sum is σ = 1355174232258. Its totient is φ = 1355174232256.

The previous prime is 1355174232221. The next prime is 1355174232271. The reversal of 1355174232257 is 7522324715531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1095620664961 + 259553567296 = 1046719^2 + 509464^2 .

It is an emirp because it is prime and its reverse (7522324715531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1355174232257 - 2²⁰ = 1355173183681 is a prime.

It is not a weakly prime, because it can be changed into another prime (1355174232157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677587116128 + 677587116129.

It is an arithmetic number, because the mean of its divisors is an integer number (677587116129).

Almost surely, 2^{1355174232257} is an apocalyptic number.

It is an amenable number.

1355174232257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355174232257 is an equidigital number, since it uses as much as digits as its factorization.

1355174232257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1764000, while the sum is 47.

Adding to 1355174232257 its reverse (7522324715531), we get a palindrome (8877498947788).

The spelling of 1355174232257 in words is "one trillion, three hundred fifty-five billion, one hundred seventy-four million, two hundred thirty-two thousand, two hundred fifty-seven".