165501201 has 8 divisors (see below), whose sum is σ = 220801984. Its totient is φ = 110267280.

The previous prime is 165501199. The next prime is 165501209. The reversal of 165501201 is 102105561.

165501201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 165501201 - 2¹ = 165501199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165501209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10621 + ... + 21066.

It is an arithmetic number, because the mean of its divisors is an integer number (27600248).

Almost surely, 2^165501201 is an apocalyptic number.

It is an amenable number.

165501201 is a deficient number, since it is larger than the sum of its proper divisors (55300783).

165501201 is a wasteful number, since it uses less digits than its factorization.

165501201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33431.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 165501201 is about 12864.7270083745. The cubic root of 165501201 is about 549.0354455036.

Adding to 165501201 its reverse (102105561), we get a palindrome (267606762).

The spelling of 165501201 in words is "one hundred sixty-five million, five hundred one thousand, two hundred one".