1120553 has 4 divisors (see below), whose sum is σ = 1280640. Its totient is φ = 960468.

The previous prime is 1120549. The next prime is 1120573. The reversal of 1120553 is 3550211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1120553 - 2² = 1120549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1120513) 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, 80033 + ... + 80046.

It is an arithmetic number, because the mean of its divisors is an integer number (320160).

2^1120553 is an apocalyptic number.

It is an amenable number.

1120553 is a deficient number, since it is larger than the sum of its proper divisors (160087).

1120553 is an equidigital number, since it uses as much as digits as its factorization.

1120553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160086.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 1120553 is about 1058.5617601255. The cubic root of 1120553 is about 103.8669711845.

Adding to 1120553 its reverse (3550211), we get a palindrome (4670764).

The spelling of 1120553 in words is "one million, one hundred twenty thousand, five hundred fifty-three".