165741 has 8 divisors (see below), whose sum is σ = 223584. Its totient is φ = 109200.

The previous prime is 165721. The next prime is 165749. The reversal of 165741 is 147561.

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

It is not a de Polignac number, because 165741 - 2⁵ = 165709 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165749) 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, 30 + ... + 576.

It is an arithmetic number, because the mean of its divisors is an integer number (27948).

2¹⁶⁵⁷⁴¹ is an apocalyptic number.

It is an amenable number.

165741 is a deficient number, since it is larger than the sum of its proper divisors (57843).

165741 is a wasteful number, since it uses less digits than its factorization.

165741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651.

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

The square root of 165741 is about 407.1130064245. The cubic root of 165741 is about 54.9300488121.

It can be divided in two parts, 165 and 741, that multiplied together give a triangular number (122265 = T₄₉₄).

The spelling of 165741 in words is "one hundred sixty-five thousand, seven hundred forty-one".