513251630 has 16 divisors (see below), whose sum is σ = 927122544. Its totient is φ = 204574080.

The previous prime is 513251623. The next prime is 513251633. The reversal of 513251630 is 36152315.

It is a self number, because there is not a number n which added to its sum of digits gives 513251630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513251633) 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 7 ways as a sum of consecutive naturals, for example, 87851 + ... + 93510.

It is an arithmetic number, because the mean of its divisors is an integer number (57945159).

Almost surely, 2^513251630 is an apocalyptic number.

513251630 is a deficient number, since it is larger than the sum of its proper divisors (413870914).

513251630 is a wasteful number, since it uses less digits than its factorization.

513251630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181651.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 513251630 is about 22655.0574927542. The cubic root of 513251630 is about 800.6513601435.

The spelling of 513251630 in words is "five hundred thirteen million, two hundred fifty-one thousand, six hundred thirty".