1123554433 has 4 divisors (see below), whose sum is σ = 1128504240. Its totient is φ = 1118604628.

The previous prime is 1123554391. The next prime is 1123554437. The reversal of 1123554433 is 3344553211.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3344553211 = 23 ⋅145415357.

It is a cyclic number.

It is not a de Polignac number, because 1123554433 - 2¹⁷ = 1123423361 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1123554395 and 1123554404.

It is not an unprimeable number, because it can be changed into a prime (1123554437) 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, 2474563 + ... + 2475016.

It is an arithmetic number, because the mean of its divisors is an integer number (282126060).

Almost surely, 2^1123554433 is an apocalyptic number.

It is an amenable number.

1123554433 is a deficient number, since it is larger than the sum of its proper divisors (4949807).

1123554433 is an equidigital number, since it uses as much as digits as its factorization.

1123554433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4949806.

The product of its digits is 21600, while the sum is 31.

The square root of 1123554433 is about 33519.4634951098. The cubic root of 1123554433 is about 1039.5962538436.

The spelling of 1123554433 in words is "one billion, one hundred twenty-three million, five hundred fifty-four thousand, four hundred thirty-three".