1100728553 has 12 divisors (see below), whose sum is σ = 1145581008. Its totient is φ = 1057565040.

The previous prime is 1100728537. The next prime is 1100728561. The reversal of 1100728553 is 3558270011.

It is not a de Polignac number, because 1100728553 - 2⁴ = 1100728537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1100728523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174350 + ... + 180552.

It is an arithmetic number, because the mean of its divisors is an integer number (95465084).

Almost surely, 2^1100728553 is an apocalyptic number.

It is an amenable number.

1100728553 is a deficient number, since it is larger than the sum of its proper divisors (44852455).

1100728553 is an equidigital number, since it uses as much as digits as its factorization.

1100728553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6472 (or 6443 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 1100728553 is about 33177.2294352618. The cubic root of 1100728553 is about 1032.5079653953.

Adding to 1100728553 its reverse (3558270011), we get a palindrome (4658998564).

The spelling of 1100728553 in words is "one billion, one hundred million, seven hundred twenty-eight thousand, five hundred fifty-three".