1121755 has 4 divisors (see below), whose sum is σ = 1346112. Its totient is φ = 897400.

The previous prime is 1121737. The next prime is 1121819. The reversal of 1121755 is 5571211.

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

It is not a de Polignac number, because 1121755 - 2⁵ = 1121723 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112171 + ... + 112180.

It is an arithmetic number, because the mean of its divisors is an integer number (336528).

2^1121755 is an apocalyptic number.

1121755 is a deficient number, since it is larger than the sum of its proper divisors (224357).

1121755 is an equidigital number, since it uses as much as digits as its factorization.

1121755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224356.

The product of its digits is 350, while the sum is 22.

The square root of 1121755 is about 1059.1293594269. The cubic root of 1121755 is about 103.9040967481.

Adding to 1121755 its reverse (5571211), we get a palindrome (6692966).

The spelling of 1121755 in words is "one million, one hundred twenty-one thousand, seven hundred fifty-five".