1123253564 has 24 divisors (see below), whose sum is σ = 2041562880. Its totient is φ = 540355376.

The previous prime is 1123253543. The next prime is 1123253581. The reversal of 1123253564 is 4653523211.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1123253564.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39542 + ... + 61725.

It is an arithmetic number, because the mean of its divisors is an integer number (85065120).

Almost surely, 2^1123253564 is an apocalyptic number.

It is an amenable number.

1123253564 is a deficient number, since it is larger than the sum of its proper divisors (918309316).

1123253564 is a wasteful number, since it uses less digits than its factorization.

1123253564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101377 (or 101375 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 1123253564 is about 33514.9752200416. The cubic root of 1123253564 is about 1039.5034500892.

Adding to 1123253564 its reverse (4653523211), we get a palindrome (5776776775).

The spelling of 1123253564 in words is "one billion, one hundred twenty-three million, two hundred fifty-three thousand, five hundred sixty-four".