165058 has 4 divisors (see below), whose sum is σ = 247590. Its totient is φ = 82528.

The previous prime is 165049. The next prime is 165059. The reversal of 165058 is 850561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 850561 = 17 ⋅50033.

It can be written as a sum of positive squares in only one way, i.e., 154449 + 10609 = 393^2 + 103^2 .

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165059) by changing a digit.

165058 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41263 + ... + 41266.

2¹⁶⁵⁰⁵⁸ is an apocalyptic number.

165058 is a deficient number, since it is larger than the sum of its proper divisors (82532).

165058 is an equidigital number, since it uses as much as digits as its factorization.

165058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82531.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 165058 is about 406.2733070237. The cubic root of 165058 is about 54.8544914135.

The spelling of 165058 in words is "one hundred sixty-five thousand, fifty-eight".