165147 has 4 divisors (see below), whose sum is σ = 220200. Its totient is φ = 110096.

The previous prime is 165133. The next prime is 165161. The reversal of 165147 is 741561.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (165133) and next prime (165161).

It is a cyclic number.

It is not a de Polignac number, because 165147 - 2⁶ = 165083 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (165047) 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, 27522 + ... + 27527.

It is an arithmetic number, because the mean of its divisors is an integer number (55050).

2¹⁶⁵¹⁴⁷ is an apocalyptic number.

165147 is a deficient number, since it is larger than the sum of its proper divisors (55053).

165147 is an equidigital number, since it uses as much as digits as its factorization.

165147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55052.

The product of its digits is 840, while the sum is 24.

The square root of 165147 is about 406.3828244402. The cubic root of 165147 is about 54.8643489030.

The spelling of 165147 in words is "one hundred sixty-five thousand, one hundred forty-seven".