1155655 has 4 divisors (see below), whose sum is σ = 1386792. Its totient is φ = 924520.

The previous prime is 1155653. The next prime is 1155659. The reversal of 1155655 is 5565511.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1155655 - 2¹ = 1155653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115561 + ... + 115570.

It is an arithmetic number, because the mean of its divisors is an integer number (346698).

2^1155655 is an apocalyptic number.

1155655 is a deficient number, since it is larger than the sum of its proper divisors (231137).

1155655 is an equidigital number, since it uses as much as digits as its factorization.

1155655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231136.

The product of its digits is 3750, while the sum is 28.

The square root of 1155655 is about 1075.0139533978. The cubic root of 1155655 is about 104.9404045791.

It can be divided in two parts, 11556 and 55, that added together give a palindrome (11611).

The spelling of 1155655 in words is "one million, one hundred fifty-five thousand, six hundred fifty-five".