1121055 has 16 divisors (see below), whose sum is σ = 1932000. Its totient is φ = 551808.

The previous prime is 1121051. The next prime is 1121083. The reversal of 1121055 is 5501211.

It is not a de Polignac number, because 1121055 - 2² = 1121051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121051) 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 15 ways as a sum of consecutive naturals, for example, 2680 + ... + 3069.

It is an arithmetic number, because the mean of its divisors is an integer number (120750).

2^1121055 is an apocalyptic number.

1121055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1121055 is a deficient number, since it is larger than the sum of its proper divisors (810945).

1121055 is a wasteful number, since it uses less digits than its factorization.

1121055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5770.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 1121055 is about 1058.7988477515. The cubic root of 1121055 is about 103.8824794306.

Adding to 1121055 its reverse (5501211), we get a palindrome (6622266).

The spelling of 1121055 in words is "one million, one hundred twenty-one thousand, fifty-five".