9555 has 24 divisors (see below), whose sum is σ = 19152. Its totient is φ = 4032.

The previous prime is 9551. The next prime is 9587. The reversal of 9555 is 5559.

9555 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

9555 is an admirable number.

It is not a de Polignac number, because 9555 - 2² = 9551 is a prime.

It is an Ulam number.

9555 is a lucky number.

It is a nialpdrome in base 10.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 9555.

It is not an unprimeable number, because it can be changed into a prime (9551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 729 + ... + 741.

It is an arithmetic number, because the mean of its divisors is an integer number (798).

2⁹⁵⁵⁵ is an apocalyptic number.

9555 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9576).

9555 is a wasteful number, since it uses less digits than its factorization.

9555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35 (or 28 counting only the distinct ones).

The product of its digits is 1125, while the sum is 24.

The square root of 9555 is about 97.7496803064. The cubic root of 9555 is about 21.2199112802.

It can be divided in two parts, 95 and 55, that multiplied together give a palindrome (5225).

The spelling of 9555 in words is "nine thousand, five hundred fifty-five".