513252224 has 32 divisors (see below), whose sum is σ = 1031903400. Its totient is φ = 254264832.

The previous prime is 513252217. The next prime is 513252239. The reversal of 513252224 is 422252315.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 513252193 and 513252202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4442 + ... + 32345.

Almost surely, 2^513252224 is an apocalyptic number.

It is an amenable number.

513252224 is an abundant number, since it is smaller than the sum of its proper divisors (518651176).

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

513252224 is a wasteful number, since it uses less digits than its factorization.

513252224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36910 (or 36898 counting only the distinct ones).

The product of its digits is 4800, while the sum is 26.

The square root of 513252224 is about 22655.0706024060. The cubic root of 513252224 is about 800.6516690152.

Subtracting from 513252224 its reverse (422252315), we obtain a palindrome (90999909).

The spelling of 513252224 in words is "five hundred thirteen million, two hundred fifty-two thousand, two hundred twenty-four".