1081155 has 8 divisors (see below), whose sum is σ = 1729872. Its totient is φ = 576608.

The previous prime is 1081153. The next prime is 1081163. The reversal of 1081155 is 5511801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1081155 - 2¹ = 1081153 is a prime.

It is a super-2 number, since 2×1081155² = 2337792268050, which contains 22 as substring.

1081155 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1081153) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 36024 + ... + 36053.

It is an arithmetic number, because the mean of its divisors is an integer number (216234).

2^1081155 is an apocalyptic number.

1081155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1081155 is a deficient number, since it is larger than the sum of its proper divisors (648717).

1081155 is an equidigital number, since it uses as much as digits as its factorization.

1081155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72085.

The product of its (nonzero) digits is 200, while the sum is 21.

The square root of 1081155 is about 1039.7860356823. The cubic root of 1081155 is about 102.6351182557.

Adding to 1081155 its reverse (5511801), we get a palindrome (6592956).

The spelling of 1081155 in words is "one million, eighty-one thousand, one hundred fifty-five".