11009955 has 32 divisors (see below), whose sum is σ = 19595520. Its totient is φ = 5233280.

The previous prime is 11009953. The next prime is 11009959. The reversal of 11009955 is 55990011.

It is not a de Polignac number, because 11009955 - 2¹ = 11009953 is a prime.

It is a nialpdrome in base 15.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (11009953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8116 + ... + 9374.

It is an arithmetic number, because the mean of its divisors is an integer number (612360).

Almost surely, 2^11009955 is an apocalyptic number.

11009955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11009955 is a deficient number, since it is larger than the sum of its proper divisors (8585565).

11009955 is a wasteful number, since it uses less digits than its factorization.

11009955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331.

The product of its (nonzero) digits is 2025, while the sum is 30.

The square root of 11009955 is about 3318.1252236768. The cubic root of 11009955 is about 222.4650788943.

Adding to 11009955 its reverse (55990011), we get a palindrome (66999966).

The spelling of 11009955 in words is "eleven million, nine thousand, nine hundred fifty-five".