165295505 has 16 divisors (see below), whose sum is σ = 217267920. Its totient is φ = 120164352.

The previous prime is 165295463. The next prime is 165295511. The reversal of 165295505 is 505592561.

165295505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 17405584 + 147889921 = 4172^2 + 12161^2 .

It is a cyclic number.

It is not a de Polignac number, because 165295505 - 2²⁴ = 148518289 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31064 + ... + 35993.

It is an arithmetic number, because the mean of its divisors is an integer number (13579245).

Almost surely, 2^165295505 is an apocalyptic number.

It is an amenable number.

165295505 is a deficient number, since it is larger than the sum of its proper divisors (51972415).

165295505 is a wasteful number, since it uses less digits than its factorization.

165295505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67108.

The product of its (nonzero) digits is 67500, while the sum is 38.

The square root of 165295505 is about 12856.7299497189. The cubic root of 165295505 is about 548.8078918381.

The spelling of 165295505 in words is "one hundred sixty-five million, two hundred ninety-five thousand, five hundred five".