513120829 has 4 divisors (see below), whose sum is σ = 552591676. Its totient is φ = 473649984.

The previous prime is 513120827. The next prime is 513120841. The reversal of 513120829 is 928021315.

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 270602500 + 242518329 = 16450^2 + 15573^2 .

It is a cyclic number.

It is not a de Polignac number, because 513120829 - 2¹ = 513120827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 513120829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513120827) 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, 19735404 + ... + 19735429.

It is an arithmetic number, because the mean of its divisors is an integer number (138147919).

Almost surely, 2^513120829 is an apocalyptic number.

It is an amenable number.

513120829 is a deficient number, since it is larger than the sum of its proper divisors (39470847).

513120829 is a wasteful number, since it uses less digits than its factorization.

513120829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39470846.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 513120829 is about 22652.1705141031. The cubic root of 513120829 is about 800.5833396444.

The spelling of 513120829 in words is "five hundred thirteen million, one hundred twenty thousand, eight hundred twenty-nine".