165001505 has 8 divisors (see below), whose sum is σ = 199263912. Its totient is φ = 131159808.

The previous prime is 165001489. The next prime is 165001519. The reversal of 165001505 is 505100561.

165001505 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 4 ways, for example, as 110224 + 164891281 = 332^2 + 12841^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165001505 - 2⁴ = 165001489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104312 + ... + 105881.

It is an arithmetic number, because the mean of its divisors is an integer number (24907989).

Almost surely, 2^165001505 is an apocalyptic number.

It is an amenable number.

165001505 is a deficient number, since it is larger than the sum of its proper divisors (34262407).

165001505 is a wasteful number, since it uses less digits than its factorization.

165001505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210355.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 165001505 is about 12845.2911605771. The cubic root of 165001505 is about 548.4823228410.

The spelling of 165001505 in words is "one hundred sixty-five million, one thousand, five hundred five".