513885 has 8 divisors (see below), whose sum is σ = 822240. Its totient is φ = 274064.

The previous prime is 513881. The next prime is 513899. The reversal of 513885 is 588315.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 513885 - 2² = 513881 is a prime.

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 513885.

It is not an unprimeable number, because it can be changed into a prime (513881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17115 + ... + 17144.

It is an arithmetic number, because the mean of its divisors is an integer number (102780).

2⁵¹³⁸⁸⁵ is an apocalyptic number.

It is an amenable number.

513885 is a deficient number, since it is larger than the sum of its proper divisors (308355).

513885 is a wasteful number, since it uses less digits than its factorization.

513885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34267.

The product of its digits is 4800, while the sum is 30.

The square root of 513885 is about 716.8577264702. The cubic root of 513885 is about 80.0980568449.

It can be divided in two parts, 51 and 3885, that multiplied together give a triangular number (198135 = T₆₂₉).

The spelling of 513885 in words is "five hundred thirteen thousand, eight hundred eighty-five".