165526 has 4 divisors (see below), whose sum is σ = 248292. Its totient is φ = 82762.

The previous prime is 165523. The next prime is 165527. The reversal of 165526 is 625561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 625561 = 509 ⋅1229.

It is a self number, because there is not a number n which added to its sum of digits gives 165526.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41380 + ... + 41383.

It is an arithmetic number, because the mean of its divisors is an integer number (62073).

2¹⁶⁵⁵²⁶ is an apocalyptic number.

165526 is a deficient number, since it is larger than the sum of its proper divisors (82766).

165526 is an equidigital number, since it uses as much as digits as its factorization.

165526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82765.

The product of its digits is 1800, while the sum is 25.

The square root of 165526 is about 406.8488662882. The cubic root of 165526 is about 54.9062866956.

It can be divided in two parts, 1655 and 26, that added together give a square (1681 = 41²).

The spelling of 165526 in words is "one hundred sixty-five thousand, five hundred twenty-six".