1113455565 has 40 divisors (see below), whose sum is σ = 1998489240. Its totient is φ = 593094528.

The previous prime is 1113455527. The next prime is 1113455569. The reversal of 1113455565 is 5655543111.

1113455565 is a `hidden beast` number, since 1 + 11 + 34 + 55 + 565 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 590052681 + 523402884 = 24291^2 + 22878^2 .

It is not a de Polignac number, because 1113455565 - 2⁷ = 1113455437 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113455569) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 496627 + ... + 498863.

It is an arithmetic number, because the mean of its divisors is an integer number (49962231).

Almost surely, 2^1113455565 is an apocalyptic number.

1113455565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1113455565 is a deficient number, since it is larger than the sum of its proper divisors (885033675).

1113455565 is a wasteful number, since it uses less digits than its factorization.

1113455565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3483 (or 3474 counting only the distinct ones).

The product of its digits is 45000, while the sum is 36.

The square root of 1113455565 is about 33368.4816106457. The cubic root of 1113455565 is about 1036.4721332205.

Adding to 1113455565 its reverse (5655543111), we get a palindrome (6768998676).

The spelling of 1113455565 in words is "one billion, one hundred thirteen million, four hundred fifty-five thousand, five hundred sixty-five".