9555555 has 16 divisors (see below), whose sum is σ = 15402240. Its totient is φ = 5058528.

The previous prime is 9555551. The next prime is 9555569. The reversal of 9555555 is 5555559.

9555555 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9555555 - 2² = 9555551 is a prime.

9555555 is a modest number, since divided by 5555 gives 955 as remainder.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9555551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207 + ... + 4376.

It is an arithmetic number, because the mean of its divisors is an integer number (962640).

Almost surely, 2^9555555 is an apocalyptic number.

9555555 is a deficient number, since it is larger than the sum of its proper divisors (5846685).

9555555 is a wasteful number, since it uses less digits than its factorization.

9555555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4730.

The product of its digits is 140625, while the sum is 39.

The square root of 9555555 is about 3091.2060753046. The cubic root of 9555555 is about 212.2032212348.

It can be divided in two parts, 95555 and 55, that multiplied together give a palindrome (5255525).

The spelling of 9555555 in words is "nine million, five hundred fifty-five thousand, five hundred fifty-five".