513430205 has 4 divisors (see below), whose sum is σ = 616116252. Its totient is φ = 410744160.

The previous prime is 513430201. The next prime is 513430207. The reversal of 513430205 is 502034315.

513430205 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 171845881 + 341584324 = 13109^2 + 18482^2 .

It is not a de Polignac number, because 513430205 - 2² = 513430201 is a prime.

It is a super-2 number, since 2×513430205² = 527221150812684050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513430201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51343016 + ... + 51343025.

It is an arithmetic number, because the mean of its divisors is an integer number (154029063).

Almost surely, 2^513430205 is an apocalyptic number.

It is an amenable number.

513430205 is a deficient number, since it is larger than the sum of its proper divisors (102686047).

513430205 is a wasteful number, since it uses less digits than its factorization.

513430205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102686046.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 513430205 is about 22658.9983229621. The cubic root of 513430205 is about 800.7442059198.

The spelling of 513430205 in words is "five hundred thirteen million, four hundred thirty thousand, two hundred five".