512213513 has 6 divisors (see below), whose sum is σ = 595840266. Its totient is φ = 439040112.

The previous prime is 512213509. The next prime is 512213551. The reversal of 512213513 is 315312215.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 510895609 + 1317904 = 22603^2 + 1148^2 .

It is not a de Polignac number, because 512213513 - 2² = 512213509 is a prime.

It is not an unprimeable number, because it can be changed into a prime (512213503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5226620 + ... + 5226717.

It is an arithmetic number, because the mean of its divisors is an integer number (99306711).

Almost surely, 2^512213513 is an apocalyptic number.

It is an amenable number.

512213513 is a deficient number, since it is larger than the sum of its proper divisors (83626753).

512213513 is a wasteful number, since it uses less digits than its factorization.

512213513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10453351 (or 10453344 counting only the distinct ones).

The product of its digits is 900, while the sum is 23.

The square root of 512213513 is about 22632.1345215161. The cubic root of 512213513 is about 800.1111892330. Note that the first 4 decimals are identical.

Adding to 512213513 its reverse (315312215), we get a palindrome (827525728).

The spelling of 512213513 in words is "five hundred twelve million, two hundred thirteen thousand, five hundred thirteen".