11112555 has 16 divisors (see below), whose sum is σ = 17821440. Its totient is φ = 5912928.

The previous prime is 11112551. The next prime is 11112557. The reversal of 11112555 is 55521111.

It is not a de Polignac number, because 11112555 - 2² = 11112551 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (11112551) 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 15 ways as a sum of consecutive naturals, for example, 12144 + ... + 13026.

It is an arithmetic number, because the mean of its divisors is an integer number (1113840).

Almost surely, 2^11112555 is an apocalyptic number.

11112555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11112555 is a deficient number, since it is larger than the sum of its proper divisors (6708885).

11112555 is an equidigital number, since it uses as much as digits as its factorization.

11112555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730.

The product of its digits is 250, while the sum is 21.

The square root of 11112555 is about 3333.5499096309. The cubic root of 11112555 is about 223.1539821434.

Adding to 11112555 its reverse (55521111), we get a palindrome (66633666).

The spelling of 11112555 in words is "eleven million, one hundred twelve thousand, five hundred fifty-five".