165377 has 4 divisors (see below), whose sum is σ = 168240. Its totient is φ = 162516.

The previous prime is 165367. The next prime is 165379. The reversal of 165377 is 773561.

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.

It is a cyclic number.

It is not a de Polignac number, because 165377 - 2⁶ = 165313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1343 + ... + 1460.

It is an arithmetic number, because the mean of its divisors is an integer number (42060).

It is a Proth number, since it is equal to 323 ⋅ 2⁹ + 1 and 323 < 2⁹.

2¹⁶⁵³⁷⁷ is an apocalyptic number.

It is an amenable number.

165377 is a deficient number, since it is larger than the sum of its proper divisors (2863).

165377 is an equidigital number, since it uses as much as digits as its factorization.

165377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2862.

The product of its digits is 4410, while the sum is 29.

The square root of 165377 is about 406.6657103814. The cubic root of 165377 is about 54.8898069227.

The spelling of 165377 in words is "one hundred sixty-five thousand, three hundred seventy-seven".