513612223 has 2 divisors, whose sum is σ = 513612224. Its totient is φ = 513612222.

The previous prime is 513612221. The next prime is 513612317. The reversal of 513612223 is 322216315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 513612223 - 2¹ = 513612221 is a prime.

Together with 513612221, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513612221) 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, 256806111 + 256806112.

It is an arithmetic number, because the mean of its divisors is an integer number (256806112).

Almost surely, 2^513612223 is an apocalyptic number.

513612223 is a deficient number, since it is larger than the sum of its proper divisors (1).

513612223 is an equidigital number, since it uses as much as digits as its factorization.

513612223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 25.

The square root of 513612223 is about 22663.0144288001. The cubic root of 513612223 is about 800.8388196488.

Adding to 513612223 its reverse (322216315), we get a palindrome (835828538).

The spelling of 513612223 in words is "five hundred thirteen million, six hundred twelve thousand, two hundred twenty-three".