2105504555 has 32 divisors (see below), whose sum is σ = 3157152768. Its totient is φ = 1309564800.

The previous prime is 2105504539. The next prime is 2105504561. The reversal of 2105504555 is 5554055012.

It is not a de Polignac number, because 2105504555 - 2⁴ = 2105504539 is a prime.

It is a super-2 number, since 2×2105504555² = 8866298862251496050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171554 + ... + 183416.

It is an arithmetic number, because the mean of its divisors is an integer number (98661024).

Almost surely, 2^2105504555 is an apocalyptic number.

2105504555 is a deficient number, since it is larger than the sum of its proper divisors (1051648213).

2105504555 is a wasteful number, since it uses less digits than its factorization.

2105504555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12347.

The product of its (nonzero) digits is 25000, while the sum is 32.

The square root of 2105504555 is about 45885.7772626769. Note that the first 3 decimals coincide. The cubic root of 2105504555 is about 1281.6970806061.

Adding to 2105504555 its reverse (5554055012), we get a palindrome (7659559567).

The spelling of 2105504555 in words is "two billion, one hundred five million, five hundred four thousand, five hundred fifty-five".