1123455578 has 16 divisors (see below), whose sum is σ = 1953051264. Its totient is φ = 474699120.

The previous prime is 1123455577. The next prime is 1123455581. The reversal of 1123455578 is 8755543211.

It is a happy number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1123455577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 564125 + ... + 566112.

It is an arithmetic number, because the mean of its divisors is an integer number (122065704).

Almost surely, 2^1123455578 is an apocalyptic number.

1123455578 is a deficient number, since it is larger than the sum of its proper divisors (829595686).

1123455578 is a wasteful number, since it uses less digits than its factorization.

1123455578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130317.

The product of its digits is 168000, while the sum is 41.

The square root of 1123455578 is about 33517.9888716492. The cubic root of 1123455578 is about 1039.5657636128.

Adding to 1123455578 its reverse (8755543211), we get a palindrome (9878998789).

The spelling of 1123455578 in words is "one billion, one hundred twenty-three million, four hundred fifty-five thousand, five hundred seventy-eight".