515115213 has 16 divisors (see below), whose sum is σ = 724001280. Its totient is φ = 324871344.

The previous prime is 515115193. The next prime is 515115217. The reversal of 515115213 is 312511515.

It is not a de Polignac number, because 515115213 - 2⁶ = 515115149 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515115217) 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, 36270 + ... + 48432.

It is an arithmetic number, because the mean of its divisors is an integer number (45250080).

Almost surely, 2^515115213 is an apocalyptic number.

It is an amenable number.

515115213 is a deficient number, since it is larger than the sum of its proper divisors (208886067).

515115213 is a wasteful number, since it uses less digits than its factorization.

515115213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12928.

The product of its digits is 750, while the sum is 24.

The square root of 515115213 is about 22696.1497395483. The cubic root of 515115213 is about 801.6192271888.

Adding to 515115213 its reverse (312511515), we get a palindrome (827626728).

The spelling of 515115213 in words is "five hundred fifteen million, one hundred fifteen thousand, two hundred thirteen".