513879 has 4 divisors (see below), whose sum is σ = 685176. Its totient is φ = 342584.

The previous prime is 513871. The next prime is 513881. The reversal of 513879 is 978315.

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 513879 - 2³ = 513871 is a prime.

It is an Ulam number.

It is a D-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 513879.

It is not an unprimeable number, because it can be changed into a prime (513871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85644 + ... + 85649.

It is an arithmetic number, because the mean of its divisors is an integer number (171294).

2⁵¹³⁸⁷⁹ is an apocalyptic number.

513879 is a deficient number, since it is larger than the sum of its proper divisors (171297).

513879 is a wasteful number, since it uses less digits than its factorization.

513879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171296.

The product of its digits is 7560, while the sum is 33.

The square root of 513879 is about 716.8535415271. The cubic root of 513879 is about 80.0977451084.

The spelling of 513879 in words is "five hundred thirteen thousand, eight hundred seventy-nine".