165427 has 8 divisors (see below), whose sum is σ = 180576. Its totient is φ = 150912.

The previous prime is 165397. The next prime is 165437. The reversal of 165427 is 724561.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165437) 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, 498 + ... + 760.

It is an arithmetic number, because the mean of its divisors is an integer number (22572).

2¹⁶⁵⁴²⁷ is an apocalyptic number.

165427 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

165427 is a deficient number, since it is larger than the sum of its proper divisors (15149).

165427 is a wasteful number, since it uses less digits than its factorization.

165427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317.

The product of its digits is 1680, while the sum is 25.

The square root of 165427 is about 406.7271812899. The cubic root of 165427 is about 54.8953381509.

Adding to 165427 its reverse (724561), we get a palindrome (889988).

It can be divided in two parts, 1654 and 27, that added together give a square (1681 = 41²).

The spelling of 165427 in words is "one hundred sixty-five thousand, four hundred twenty-seven".