1156655 has 4 divisors (see below), whose sum is σ = 1387992. Its totient is φ = 925320.

The previous prime is 1156643. The next prime is 1156681. The reversal of 1156655 is 5566511.

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

It is not a de Polignac number, because 1156655 - 2⁶ = 1156591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115661 + ... + 115670.

It is an arithmetic number, because the mean of its divisors is an integer number (346998).

2^1156655 is an apocalyptic number.

1156655 is a deficient number, since it is larger than the sum of its proper divisors (231337).

1156655 is an equidigital number, since it uses as much as digits as its factorization.

1156655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231336.

The product of its digits is 4500, while the sum is 29.

The square root of 1156655 is about 1075.4789630672. The cubic root of 1156655 is about 104.9706645184.

The spelling of 1156655 in words is "one million, one hundred fifty-six thousand, six hundred fifty-five".