2105513005 has 8 divisors (see below), whose sum is σ = 2528321400. Its totient is φ = 1683273216.

The previous prime is 2105512973. The next prime is 2105513029. The reversal of 2105513005 is 5003155012.

It can be written as a sum of positive squares in 4 ways, for example, as 14645929 + 2090867076 = 3827^2 + 45726^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2105513005 - 2⁵ = 2105512973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133960 + ... + 148849.

It is an arithmetic number, because the mean of its divisors is an integer number (316040175).

Almost surely, 2^2105513005 is an apocalyptic number.

It is an amenable number.

2105513005 is a deficient number, since it is larger than the sum of its proper divisors (422808395).

2105513005 is a wasteful number, since it uses less digits than its factorization.

2105513005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284303.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 2105513005 is about 45885.8693390460. The cubic root of 2105513005 is about 1281.6987952111.

Adding to 2105513005 its reverse (5003155012), we get a palindrome (7108668017).

The spelling of 2105513005 in words is "two billion, one hundred five million, five hundred thirteen thousand, five".