513404 has 6 divisors (see below), whose sum is σ = 898464. Its totient is φ = 256700.

The previous prime is 513397. The next prime is 513407. The reversal of 513404 is 404315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513407) 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 as a sum of consecutive naturals, namely, 64172 + ... + 64179.

It is an arithmetic number, because the mean of its divisors is an integer number (149744).

2⁵¹³⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

513404 is a deficient number, since it is larger than the sum of its proper divisors (385060).

513404 is a wasteful number, since it uses less digits than its factorization.

513404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128355 (or 128353 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 513404 is about 716.5221559729. The cubic root of 513404 is about 80.0730582608.

Adding to 513404 its reverse (404315), we get a palindrome (917719).

The spelling of 513404 in words is "five hundred thirteen thousand, four hundred four".