1135553 has 4 divisors (see below), whose sum is σ = 1174740. Its totient is φ = 1096368.

The previous prime is 1135531. The next prime is 1135597. The reversal of 1135553 is 3555311.

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

It can be written as a sum of positive squares in 2 ways, for example, as 795664 + 339889 = 892^2 + 583^2 .

It is a cyclic number.

It is not a de Polignac number, because 1135553 - 2¹⁴ = 1119169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1135513) 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, 19550 + ... + 19607.

It is an arithmetic number, because the mean of its divisors is an integer number (293685).

2^1135553 is an apocalyptic number.

It is an amenable number.

1135553 is a deficient number, since it is larger than the sum of its proper divisors (39187).

1135553 is an equidigital number, since it uses as much as digits as its factorization.

1135553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39186.

The product of its digits is 1125, while the sum is 23.

The square root of 1135553 is about 1065.6232917875. The cubic root of 1135553 is about 104.3283814186.

The spelling of 1135553 in words is "one million, one hundred thirty-five thousand, five hundred fifty-three".