513222271 has 2 divisors, whose sum is σ = 513222272. Its totient is φ = 513222270.

The previous prime is 513222209. The next prime is 513222331. The reversal of 513222271 is 172222315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 513222271 - 2¹¹ = 513220223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513222371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256611135 + 256611136.

It is an arithmetic number, because the mean of its divisors is an integer number (256611136).

Almost surely, 2^513222271 is an apocalyptic number.

513222271 is a deficient number, since it is larger than the sum of its proper divisors (1).

513222271 is an equidigital number, since it uses as much as digits as its factorization.

513222271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 25.

The square root of 513222271 is about 22654.4095266242. The cubic root of 513222271 is about 800.6360935763.

Adding to 513222271 its reverse (172222315), we get a palindrome (685444586).

It can be divided in two parts, 513 and 222271, that added together give a square (222784 = 472²).

The spelling of 513222271 in words is "five hundred thirteen million, two hundred twenty-two thousand, two hundred seventy-one".