2153135515 has 4 divisors (see below), whose sum is σ = 2583762624. Its totient is φ = 1722508408.

The previous prime is 2153135513. The next prime is 2153135531. The reversal of 2153135515 is 5155313512.

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

It is a cyclic number.

It is not a de Polignac number, because 2153135515 - 2¹ = 2153135513 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2153135513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215313547 + ... + 215313556.

It is an arithmetic number, because the mean of its divisors is an integer number (645940656).

Almost surely, 2^2153135515 is an apocalyptic number.

2153135515 is a deficient number, since it is larger than the sum of its proper divisors (430627109).

2153135515 is an equidigital number, since it uses as much as digits as its factorization.

2153135515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430627108.

The product of its digits is 11250, while the sum is 31.

The square root of 2153135515 is about 46401.8912868861. The cubic root of 2153135515 is about 1291.2900011567.

The spelling of 2153135515 in words is "two billion, one hundred fifty-three million, one hundred thirty-five thousand, five hundred fifteen".