513286 has 4 divisors (see below), whose sum is σ = 769932. Its totient is φ = 256642.

The previous prime is 513283. The next prime is 513307. The reversal of 513286 is 682315.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 682315 = 5 ⋅136463.

It is a self number, because there is not a number n which added to its sum of digits gives 513286.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 513286.

It is not an unprimeable number, because it can be changed into a prime (513283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128320 + ... + 128323.

It is an arithmetic number, because the mean of its divisors is an integer number (192483).

2⁵¹³²⁸⁶ is an apocalyptic number.

513286 is a deficient number, since it is larger than the sum of its proper divisors (256646).

513286 is a wasteful number, since it uses less digits than its factorization.

513286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256645.

The product of its digits is 1440, while the sum is 25.

The square root of 513286 is about 716.4398090559. The cubic root of 513286 is about 80.0669231672.

It can be divided in two parts, 5 and 13286, that multiplied together give a triangular number (66430 = T₃₆₄).

The spelling of 513286 in words is "five hundred thirteen thousand, two hundred eighty-six".