513520404 has 12 divisors (see below), whose sum is σ = 1198214304. Its totient is φ = 171173464.

The previous prime is 513520327. The next prime is 513520417. The reversal of 513520404 is 404025315.

It is a tau number, because it is divible by the number of its divisors (12).

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, 21396672 + ... + 21396695.

It is an arithmetic number, because the mean of its divisors is an integer number (99851192).

Almost surely, 2^513520404 is an apocalyptic number.

It is an amenable number.

513520404 is an abundant number, since it is smaller than the sum of its proper divisors (684693900).

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

513520404 is a wasteful number, since it uses less digits than its factorization.

513520404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42793374 (or 42793372 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 513520404 is about 22660.9885927335. The cubic root of 513520404 is about 800.7910945373.

Adding to 513520404 its reverse (404025315), we get a palindrome (917545719).

The spelling of 513520404 in words is "five hundred thirteen million, five hundred twenty thousand, four hundred four".