135155161 has 2 divisors, whose sum is σ = 135155162. Its totient is φ = 135155160.

The previous prime is 135155143. The next prime is 135155173. The reversal of 135155161 is 161551531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86769225 + 48385936 = 9315^2 + 6956^2 .

It is an emirp because it is prime and its reverse (161551531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135155161 - 2¹¹ = 135153113 is a prime.

It is not a weakly prime, because it can be changed into another prime (135155131) 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, 67577580 + 67577581.

It is an arithmetic number, because the mean of its divisors is an integer number (67577581).

Almost surely, 2^135155161 is an apocalyptic number.

It is an amenable number.

135155161 is a deficient number, since it is larger than the sum of its proper divisors (1).

135155161 is an equidigital number, since it uses as much as digits as its factorization.

135155161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2250, while the sum is 28.

The square root of 135155161 is about 11625.6251874899. The cubic root of 135155161 is about 513.1892432581.

The spelling of 135155161 in words is "one hundred thirty-five million, one hundred fifty-five thousand, one hundred sixty-one".