513530250 has 64 divisors (see below), whose sum is σ = 1306056960. Its totient is φ = 134347200.

The previous prime is 513530243. The next prime is 513530261. The reversal of 513530250 is 52035315.

It is a self number, because there is not a number n which added to its sum of digits gives 513530250.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 33291 + ... + 46209.

It is an arithmetic number, because the mean of its divisors is an integer number (20407140).

Almost surely, 2^513530250 is an apocalyptic number.

513530250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 513530250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (653028480).

513530250 is an abundant number, since it is smaller than the sum of its proper divisors (792526710).

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

513530250 is a wasteful number, since it uses less digits than its factorization.

513530250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12992 (or 12982 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 513530250 is about 22661.2058372894. The cubic root of 513530250 is about 800.7962125025.

Adding to 513530250 its reverse (52035315), we get a palindrome (565565565).

The spelling of 513530250 in words is "five hundred thirteen million, five hundred thirty thousand, two hundred fifty".