1111520055 has 16 divisors (see below), whose sum is σ = 1783286784. Its totient is φ = 591192480.

The previous prime is 1111520041. The next prime is 1111520087. The reversal of 1111520055 is 5500251111.

It is not a de Polignac number, because 1111520055 - 2⁶ = 1111519991 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95451 + ... + 106460.

It is an arithmetic number, because the mean of its divisors is an integer number (111455424).

Almost surely, 2^1111520055 is an apocalyptic number.

1111520055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1111520055 is a deficient number, since it is larger than the sum of its proper divisors (671766729).

1111520055 is a wasteful number, since it uses less digits than its factorization.

1111520055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202286.

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

The square root of 1111520055 is about 33339.4669273520. The cubic root of 1111520055 is about 1035.8712214398.

Adding to 1111520055 its reverse (5500251111), we get a palindrome (6611771166).

The spelling of 1111520055 in words is "one billion, one hundred eleven million, five hundred twenty thousand, fifty-five".