1123553444 has 24 divisors (see below), whose sum is σ = 2141266680. Its totient is φ = 512734464.

The previous prime is 1123553419. The next prime is 1123553447. The reversal of 1123553444 is 4443553211.

It can be written as a sum of positive squares in 4 ways, for example, as 21977344 + 1101576100 = 4688^2 + 33190^2 .

It is a super-2 number, since 2×1123553444² = 2524744683048522272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1123553444.

It is not an unprimeable number, because it can be changed into a prime (1123553447) 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 7 ways as a sum of consecutive naturals, for example, 116759 + ... + 126014.

It is an arithmetic number, because the mean of its divisors is an integer number (89219445).

Almost surely, 2^1123553444 is an apocalyptic number.

It is an amenable number.

1123553444 is a deficient number, since it is larger than the sum of its proper divisors (1017713236).

1123553444 is a wasteful number, since it uses less digits than its factorization.

1123553444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242879 (or 242877 counting only the distinct ones).

The product of its digits is 28800, while the sum is 32.

The square root of 1123553444 is about 33519.4487424838. The cubic root of 1123553444 is about 1039.5959488113.

The spelling of 1123553444 in words is "one billion, one hundred twenty-three million, five hundred fifty-three thousand, four hundred forty-four".