11055555 has 32 divisors (see below), whose sum is σ = 22464000. Its totient is φ = 5053536.

The previous prime is 11055553. The next prime is 11055557. The reversal of 11055555 is 55555011.

11055555 is a `hidden beast` number, since 1 + 105 + 5 + 555 = 666.

It is an interprime number because it is at equal distance from previous prime (11055553) and next prime (11055557).

It is not a de Polignac number, because 11055555 - 2¹ = 11055553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

11055555 is a modest number, since divided by 5555 gives 1105 as remainder.

It is not an unprimeable number, because it can be changed into a prime (11055553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4905 + ... + 6794.

It is an arithmetic number, because the mean of its divisors is an integer number (702000).

Almost surely, 2^11055555 is an apocalyptic number.

11055555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11055555 is an abundant number, since it is smaller than the sum of its proper divisors (11408445).

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

11055555 is a wasteful number, since it uses less digits than its factorization.

11055555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11720 (or 11714 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 27.

The square root of 11055555 is about 3324.9894736675. The cubic root of 11055555 is about 222.7717841952.

The spelling of 11055555 in words is "eleven million, fifty-five thousand, five hundred fifty-five".