513321250 has 80 divisors (see below), whose sum is σ = 1070657280. Its totient is φ = 183240000.

The previous prime is 513321217. The next prime is 513321251. The reversal of 513321250 is 52123315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513321251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 503241 + ... + 504259.

It is an arithmetic number, because the mean of its divisors is an integer number (13383216).

Almost surely, 2^513321250 is an apocalyptic number.

513321250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

513321250 is an abundant number, since it is smaller than the sum of its proper divisors (557336030).

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

513321250 is a wasteful number, since it uses less digits than its factorization.

513321250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085 (or 1070 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 513321250 is about 22656.5939629063. The cubic root of 513321250 is about 800.6875599490.

Adding to 513321250 its reverse (52123315), we get a palindrome (565444565).

The spelling of 513321250 in words is "five hundred thirteen million, three hundred twenty-one thousand, two hundred fifty".