1113555 has 16 divisors (see below), whose sum is σ = 1812384. Its totient is φ = 583680.

The previous prime is 1113527. The next prime is 1113557. The reversal of 1113555 is 5553111.

It is not a de Polignac number, because 1113555 - 2⁶ = 1113491 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1113557) by changing a digit.

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, 307 + ... + 1523.

It is an arithmetic number, because the mean of its divisors is an integer number (113274).

2^1113555 is an apocalyptic number.

1113555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1113555 is a deficient number, since it is larger than the sum of its proper divisors (698829).

1113555 is a wasteful number, since it uses less digits than its factorization.

1113555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286.

The product of its digits is 375, while the sum is 21.

The square root of 1113555 is about 1055.2511549390. The cubic root of 1113555 is about 103.6502985683.

Adding to 1113555 its reverse (5553111), we get a palindrome (6666666).

The spelling of 1113555 in words is "one million, one hundred thirteen thousand, five hundred fifty-five".