2105534505 has 16 divisors (see below), whose sum is σ = 3393448704. Its totient is φ = 1114753920.

The previous prime is 2105534491. The next prime is 2105534527. The reversal of 2105534505 is 5054355012.

It is a happy number.

It is not a de Polignac number, because 2105534505 - 2⁴ = 2105534489 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 510241 + ... + 514350.

It is an arithmetic number, because the mean of its divisors is an integer number (212090544).

Almost surely, 2^2105534505 is an apocalyptic number.

It is an amenable number.

2105534505 is a deficient number, since it is larger than the sum of its proper divisors (1287914199).

2105534505 is a wasteful number, since it uses less digits than its factorization.

2105534505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024736.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 2105534505 is about 45886.1036153649. The cubic root of 2105534505 is about 1281.7031577948.

Adding to 2105534505 its reverse (5054355012), we get a palindrome (7159889517).

The spelling of 2105534505 in words is "two billion, one hundred five million, five hundred thirty-four thousand, five hundred five".