2104353505 has 4 divisors (see below), whose sum is σ = 2525224212. Its totient is φ = 1683482800.

The previous prime is 2104353497. The next prime is 2104353509. The reversal of 2104353505 is 5053534012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1677393936 + 426959569 = 40956^2 + 20663^2 .

It is not a de Polignac number, because 2104353505 - 2³ = 2104353497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2104353509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210435346 + ... + 210435355.

It is an arithmetic number, because the mean of its divisors is an integer number (631306053).

Almost surely, 2^2104353505 is an apocalyptic number.

It is an amenable number.

2104353505 is a deficient number, since it is larger than the sum of its proper divisors (420870707).

2104353505 is an equidigital number, since it uses as much as digits as its factorization.

2104353505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420870706.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 2104353505 is about 45873.2329904924. The cubic root of 2104353505 is about 1281.4634760536.

Adding to 2104353505 its reverse (5053534012), we get a palindrome (7157887517).

The spelling of 2104353505 in words is "two billion, one hundred four million, three hundred fifty-three thousand, five hundred five".