513223424 has 36 divisors (see below), whose sum is σ = 1170795024. Its totient is φ = 219952128.

The previous prime is 513223397. The next prime is 513223427. The reversal of 513223424 is 424322315.

It is a junction number, because it is equal to n+sod(n) for n = 513223393 and 513223402.

It is not an unprimeable number, because it can be changed into a prime (513223427) 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 3 ways as a sum of consecutive naturals, for example, 141407 + ... + 144990.

It is an arithmetic number, because the mean of its divisors is an integer number (32522084).

Almost surely, 2^513223424 is an apocalyptic number.

It is an amenable number.

513223424 is an abundant number, since it is smaller than the sum of its proper divisors (657571600).

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

513223424 is an equidigital number, since it uses as much as digits as its factorization.

513223424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286420 (or 286406 counting only the distinct ones).

The product of its digits is 5760, while the sum is 26.

The square root of 513223424 is about 22654.4349741943. The cubic root of 513223424 is about 800.6366931429.

Adding to 513223424 its reverse (424322315), we get a palindrome (937545739).

The spelling of 513223424 in words is "five hundred thirteen million, two hundred twenty-three thousand, four hundred twenty-four".