165156005 has 16 divisors (see below), whose sum is σ = 229883520. Its totient is φ = 111557952.

The previous prime is 165155959. The next prime is 165156053. The reversal of 165156005 is 500651561.

It is a cyclic number.

It is not a de Polignac number, because 165156005 - 2²⁰ = 164107429 is a prime.

It is a congruent 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, 32870 + ... + 37559.

It is an arithmetic number, because the mean of its divisors is an integer number (14367720).

Almost surely, 2^165156005 is an apocalyptic number.

It is an amenable number.

165156005 is a deficient number, since it is larger than the sum of its proper divisors (64727515).

165156005 is an equidigital number, since it uses as much as digits as its factorization.

165156005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70508.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 165156005 is about 12851.3036303715. The cubic root of 165156005 is about 548.6534608427.

The spelling of 165156005 in words is "one hundred sixty-five million, one hundred fifty-six thousand, five".