1123553 has 2 divisors, whose sum is σ = 1123554. Its totient is φ = 1123552.

The previous prime is 1123541. The next prime is 1123561. The reversal of 1123553 is 3553211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 677329 + 446224 = 823^2 + 668^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123553 - 2¹⁰ = 1122529 is a prime.

It is a super-3 number, since 3×1123553³ = 4255023331351900131, which contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1126553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561776 + 561777.

It is an arithmetic number, because the mean of its divisors is an integer number (561777).

2^1123553 is an apocalyptic number.

It is an amenable number.

1123553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123553 is an equidigital number, since it uses as much as digits as its factorization.

1123553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 450, while the sum is 20.

The square root of 1123553 is about 1059.9778299568. The cubic root of 1123553 is about 103.9595811871.

Adding to 1123553 its reverse (3553211), we get a palindrome (4676764).

The spelling of 1123553 in words is "one million, one hundred twenty-three thousand, five hundred fifty-three".