513087 has 4 divisors (see below), whose sum is σ = 684120. Its totient is φ = 342056.

The previous prime is 513083. The next prime is 513101. The reversal of 513087 is 780315.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 513087 - 2² = 513083 is a prime.

It is a D-number.

513087 is a lucky number.

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 513087.

It is not an unprimeable number, because it can be changed into a prime (513083) 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, 85512 + ... + 85517.

It is an arithmetic number, because the mean of its divisors is an integer number (171030).

2⁵¹³⁰⁸⁷ is an apocalyptic number.

513087 is a deficient number, since it is larger than the sum of its proper divisors (171033).

513087 is a wasteful number, since it uses less digits than its factorization.

513087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171032.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 513087 is about 716.3009144207. The cubic root of 513087 is about 80.0565745654.

It can be divided in two parts, 51308 and 7, that added together give a palindrome (51315).

The spelling of 513087 in words is "five hundred thirteen thousand, eighty-seven".