169555 has 4 divisors (see below), whose sum is σ = 203472. Its totient is φ = 135640.

The previous prime is 169553. The next prime is 169567. The reversal of 169555 is 555961.

It is a happy number.

169555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 555961 = 7 ⋅79423.

It is not a de Polignac number, because 169555 - 2¹ = 169553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (169553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16951 + ... + 16960.

It is an arithmetic number, because the mean of its divisors is an integer number (50868).

2¹⁶⁹⁵⁵⁵ is an apocalyptic number.

169555 is a deficient number, since it is larger than the sum of its proper divisors (33917).

169555 is an equidigital number, since it uses as much as digits as its factorization.

169555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33916.

The product of its digits is 6750, while the sum is 31.

The square root of 169555 is about 411.7705671852. The cubic root of 169555 is about 55.3482040966.

The spelling of 169555 in words is "one hundred sixty-nine thousand, five hundred fifty-five".