1113051555 has 48 divisors (see below), whose sum is σ = 2405355264. Its totient is φ = 462565440.

The previous prime is 1113051553. The next prime is 1113051571. The reversal of 1113051555 is 5551503111.

1113051555 is a `hidden beast` number, since 11 + 130 + 515 + 5 + 5 = 666.

It is not a de Polignac number, because 1113051555 - 2¹ = 1113051553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1113051553) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 157149 + ... + 164078.

It is an arithmetic number, because the mean of its divisors is an integer number (50111568).

Almost surely, 2^1113051555 is an apocalyptic number.

1113051555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1113051555 is an abundant number, since it is smaller than the sum of its proper divisors (1292303709).

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

1113051555 is a wasteful number, since it uses less digits than its factorization.

1113051555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321256 (or 321253 counting only the distinct ones).

The product of its (nonzero) digits is 1875, while the sum is 27.

The square root of 1113051555 is about 33362.4272947878. The cubic root of 1113051555 is about 1036.3467590322.

Adding to 1113051555 its reverse (5551503111), we get a palindrome (6664554666).

The spelling of 1113051555 in words is "one billion, one hundred thirteen million, fifty-one thousand, five hundred fifty-five".