513212673 has 4 divisors (see below), whose sum is σ = 684283568. Its totient is φ = 342141780.

The previous prime is 513212659. The next prime is 513212683. The reversal of 513212673 is 376212315.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 513212673 - 2¹⁰ = 513211649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 513212673.

It is not an unprimeable number, because it can be changed into a prime (513212683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85535443 + ... + 85535448.

It is an arithmetic number, because the mean of its divisors is an integer number (171070892).

Almost surely, 2^513212673 is an apocalyptic number.

It is an amenable number.

513212673 is a deficient number, since it is larger than the sum of its proper divisors (171070895).

513212673 is a wasteful number, since it uses less digits than its factorization.

513212673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171070894.

The product of its digits is 7560, while the sum is 30.

The square root of 513212673 is about 22654.1976904944. The cubic root of 513212673 is about 800.6311025269.

Adding to 513212673 its reverse (376212315), we get a palindrome (889424988).

The spelling of 513212673 in words is "five hundred thirteen million, two hundred twelve thousand, six hundred seventy-three".