2153515013 has 8 divisors (see below), whose sum is σ = 2331985656. Its totient is φ = 1976875200.

The previous prime is 2153514989. The next prime is 2153515051. The reversal of 2153515013 is 3105153512.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 108847489 + 2044667524 = 10433^2 + 45218^2 .

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 2153515013 - 2⁸ = 2153514757 is a prime.

It is a super-2 number, since 2×2153515013² = 9275253822432780338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153515073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 455258 + ... + 459963.

It is an arithmetic number, because the mean of its divisors is an integer number (291498207).

Almost surely, 2^2153515013 is an apocalyptic number.

It is an amenable number.

2153515013 is a deficient number, since it is larger than the sum of its proper divisors (178470643).

2153515013 is a wasteful number, since it uses less digits than its factorization.

2153515013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915415.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 2153515013 is about 46405.9803581392. The cubic root of 2153515013 is about 1291.3658615600.

Adding to 2153515013 its reverse (3105153512), we get a palindrome (5258668525).

The spelling of 2153515013 in words is "two billion, one hundred fifty-three million, five hundred fifteen thousand, thirteen".