2135052521 has 16 divisors (see below), whose sum is σ = 2487340800. Its totient is φ = 1794761280.

The previous prime is 2135052511. The next prime is 2135052523. The reversal of 2135052521 is 1252505312.

It is a cyclic number.

It is not a de Polignac number, because 2135052521 - 2¹⁰ = 2135051497 is a prime.

2135052521 is a modest number, since divided by 52521 gives 21350 as remainder.

It is not an unprimeable number, because it can be changed into a prime (2135052523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141860 + ... + 156186.

It is an arithmetic number, because the mean of its divisors is an integer number (155458800).

Almost surely, 2^2135052521 is an apocalyptic number.

It is an amenable number.

2135052521 is a deficient number, since it is larger than the sum of its proper divisors (352288279).

2135052521 is a wasteful number, since it uses less digits than its factorization.

2135052521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14744.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 2135052521 is about 46206.6285396370. The cubic root of 2135052521 is about 1287.6648902587.

Adding to 2135052521 its reverse (1252505312), we get a palindrome (3387557833).

The spelling of 2135052521 in words is "two billion, one hundred thirty-five million, fifty-two thousand, five hundred twenty-one".