513246520 has 32 divisors (see below), whose sum is σ = 1155474720. Its totient is φ = 205179520.

The previous prime is 513246511. The next prime is 513246527. The reversal of 513246520 is 25642315.

It is a super-2 number, since 2×513246520² = 526843980584220800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513246527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106074 + ... + 110806.

It is an arithmetic number, because the mean of its divisors is an integer number (36108585).

Almost surely, 2^513246520 is an apocalyptic number.

It is an amenable number.

513246520 is an abundant number, since it is smaller than the sum of its proper divisors (642228200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

513246520 is a wasteful number, since it uses less digits than its factorization.

513246520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7455 (or 7451 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 513246520 is about 22654.9447141237. The cubic root of 513246520 is about 800.6487030050.

Adding to 513246520 its reverse (25642315), we get a palindrome (538888835).

The spelling of 513246520 in words is "five hundred thirteen million, two hundred forty-six thousand, five hundred twenty".