1123304550 has 48 divisors (see below), whose sum is σ = 2789821440. Its totient is φ = 299115040.

The previous prime is 1123304543. The next prime is 1123304551. The reversal of 1123304550 is 554033211.

It is a super-2 number, since 2×1123304550² = 2523626224101405000, 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 1123304550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123304551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106411 + ... + 116489.

It is an arithmetic number, because the mean of its divisors is an integer number (58121280).

Almost surely, 2^1123304550 is an apocalyptic number.

1123304550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1123304550 is an abundant number, since it is smaller than the sum of its proper divisors (1666516890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123304550 is a wasteful number, since it uses less digits than its factorization.

1123304550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10837 (or 10832 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1123304550 is about 33515.7358564600. The cubic root of 1123304550 is about 1039.5191780076.

Adding to 1123304550 its reverse (554033211), we get a palindrome (1677337761).

The spelling of 1123304550 in words is "one billion, one hundred twenty-three million, three hundred four thousand, five hundred fifty".