1105505553 has 4 divisors (see below), whose sum is σ = 1474007408. Its totient is φ = 737003700.

The previous prime is 1105505543. The next prime is 1105505567. The reversal of 1105505553 is 3555055011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1105505553 - 2⁵ = 1105505521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1105505553.

It is not an unprimeable number, because it can be changed into a prime (1105505543) 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 3 ways as a sum of consecutive naturals, for example, 184250923 + ... + 184250928.

It is an arithmetic number, because the mean of its divisors is an integer number (368501852).

Almost surely, 2^1105505553 is an apocalyptic number.

It is an amenable number.

1105505553 is a deficient number, since it is larger than the sum of its proper divisors (368501855).

1105505553 is an equidigital number, since it uses as much as digits as its factorization.

1105505553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368501854.

The product of its (nonzero) digits is 9375, while the sum is 30.

The square root of 1105505553 is about 33249.1436431076. The cubic root of 1105505553 is about 1033.9994540862. Note that the first 3 decimals are identical.

The spelling of 1105505553 in words is "one billion, one hundred five million, five hundred five thousand, five hundred fifty-three".