1115501055 has 64 divisors (see below), whose sum is σ = 1926955008. Its totient is φ = 549924480.

The previous prime is 1115501041. The next prime is 1115501069. The reversal of 1115501055 is 5501055111.

It is an interprime number because it is at equal distance from previous prime (1115501041) and next prime (1115501069).

It is not a de Polignac number, because 1115501055 - 2³⁰ = 41759231 is a prime.

It is a super-2 number, since 2×1115501055² = 2488685207412226050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 939172 + ... + 940358.

It is an arithmetic number, because the mean of its divisors is an integer number (30108672).

Almost surely, 2^1115501055 is an apocalyptic number.

1115501055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1115501055 is a deficient number, since it is larger than the sum of its proper divisors (811453953).

1115501055 is a wasteful number, since it uses less digits than its factorization.

1115501055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316.

The product of its (nonzero) digits is 625, while the sum is 24.

The square root of 1115501055 is about 33399.1175781636. The cubic root of 1115501055 is about 1037.1064337782.

Adding to 1115501055 its reverse (5501055111), we get a palindrome (6616556166).

The spelling of 1115501055 in words is "one billion, one hundred fifteen million, five hundred one thousand, fifty-five".