1133553 has 4 divisors (see below), whose sum is σ = 1511408. Its totient is φ = 755700.

The previous prime is 1133551. The next prime is 1133579. The reversal of 1133553 is 3553311.

It is a happy number.

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 not a de Polignac number, because 1133553 - 2¹ = 1133551 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1133551) 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 3 ways as a sum of consecutive naturals, for example, 188923 + ... + 188928.

It is an arithmetic number, because the mean of its divisors is an integer number (377852).

2^1133553 is an apocalyptic number.

It is an amenable number.

1133553 is a deficient number, since it is larger than the sum of its proper divisors (377855).

1133553 is an equidigital number, since it uses as much as digits as its factorization.

1133553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377854.

The product of its digits is 675, while the sum is 21.

The square root of 1133553 is about 1064.6844602980. The cubic root of 1133553 is about 104.2670957477.

Adding to 1133553 its reverse (3553311), we get a palindrome (4686864).

The spelling of 1133553 in words is "one million, one hundred thirty-three thousand, five hundred fifty-three".