165456201 has 4 divisors (see below), whose sum is σ = 220608272. Its totient is φ = 110304132.

The previous prime is 165456167. The next prime is 165456211. The reversal of 165456201 is 102654561.

165456201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 102654561 = 3 ⋅34218187.

It is not a de Polignac number, because 165456201 - 2¹³ = 165448009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165456211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27576031 + ... + 27576036.

It is an arithmetic number, because the mean of its divisors is an integer number (55152068).

Almost surely, 2^165456201 is an apocalyptic number.

It is an amenable number.

165456201 is a deficient number, since it is larger than the sum of its proper divisors (55152071).

165456201 is an equidigital number, since it uses as much as digits as its factorization.

165456201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55152070.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 165456201 is about 12862.9779211503. The cubic root of 165456201 is about 548.9856798332.

The spelling of 165456201 in words is "one hundred sixty-five million, four hundred fifty-six thousand, two hundred one".