1123044551 has 8 divisors (see below), whose sum is σ = 1130425104. Its totient is φ = 1115674560.

The previous prime is 1123044539. The next prime is 1123044557. The reversal of 1123044551 is 1554403211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123044551 is a prime.

It is a super-2 number, since 2×1123044551² = 2522458127061583202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1123044551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123044557) 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, 409856 + ... + 412586.

It is an arithmetic number, because the mean of its divisors is an integer number (141303138).

Almost surely, 2^1123044551 is an apocalyptic number.

1123044551 is a deficient number, since it is larger than the sum of its proper divisors (7380553).

1123044551 is a wasteful number, since it uses less digits than its factorization.

1123044551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5281.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1123044551 is about 33511.8568718595. The cubic root of 1123044551 is about 1039.4389697797.

Adding to 1123044551 its reverse (1554403211), we get a palindrome (2677447762).

The spelling of 1123044551 in words is "one billion, one hundred twenty-three million, forty-four thousand, five hundred fifty-one".