165170003 has 4 divisors (see below), whose sum is σ = 165326448. Its totient is φ = 165013560.

The previous prime is 165169987. The next prime is 165170039. The reversal of 165170003 is 300071561.

165170003 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 an emirpimes, since its reverse is a distinct semiprime: 300071561 = 823 ⋅364607.

It is a cyclic number.

It is not a de Polignac number, because 165170003 - 2⁴ = 165169987 is a prime.

It is a super-2 number, since 2×165170003² = 54562259782040018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165170063) 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, 76628 + ... + 78753.

It is an arithmetic number, because the mean of its divisors is an integer number (41331612).

Almost surely, 2^165170003 is an apocalyptic number.

165170003 is a deficient number, since it is larger than the sum of its proper divisors (156445).

165170003 is a wasteful number, since it uses less digits than its factorization.

165170003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156444.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 165170003 is about 12851.8482328418. The cubic root of 165170003 is about 548.6689610041.

The spelling of 165170003 in words is "one hundred sixty-five million, one hundred seventy thousand, three".