136170505 has 4 divisors (see below), whose sum is σ = 163404612. Its totient is φ = 108936400.

The previous prime is 136170497. The next prime is 136170509. The reversal of 136170505 is 505071631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 505071631 = 181 ⋅2790451.

It can be written as a sum of positive squares in 2 ways, for example, as 62141689 + 74028816 = 7883^2 + 8604^2 .

It is not a de Polignac number, because 136170505 - 2³ = 136170497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136170509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13617046 + ... + 13617055.

It is an arithmetic number, because the mean of its divisors is an integer number (40851153).

Almost surely, 2^136170505 is an apocalyptic number.

It is an amenable number.

136170505 is a deficient number, since it is larger than the sum of its proper divisors (27234107).

136170505 is an equidigital number, since it uses as much as digits as its factorization.

136170505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27234106.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 136170505 is about 11669.2118414227. The cubic root of 136170505 is about 514.4711383664.

The spelling of 136170505 in words is "one hundred thirty-six million, one hundred seventy thousand, five hundred five".