135155173 has 2 divisors, whose sum is σ = 135155174. Its totient is φ = 135155172.

The previous prime is 135155161. The next prime is 135155213. The reversal of 135155173 is 371551531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126292644 + 8862529 = 11238^2 + 2977^2 .

It is a cyclic number.

It is not a de Polignac number, because 135155173 - 2⁹ = 135154661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135155143) 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 as a sum of consecutive naturals, namely, 67577586 + 67577587.

It is an arithmetic number, because the mean of its divisors is an integer number (67577587).

Almost surely, 2^135155173 is an apocalyptic number.

It is an amenable number.

135155173 is a deficient number, since it is larger than the sum of its proper divisors (1).

135155173 is an equidigital number, since it uses as much as digits as its factorization.

135155173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7875, while the sum is 31.

The square root of 135155173 is about 11625.6257035912. The cubic root of 135155173 is about 513.1892584463.

The spelling of 135155173 in words is "one hundred thirty-five million, one hundred fifty-five thousand, one hundred seventy-three".