515285 has 8 divisors (see below), whose sum is σ = 622296. Its totient is φ = 409600.

The previous prime is 515279. The next prime is 515293. The reversal of 515285 is 582515.

It can be written as a sum of positive squares in 4 ways, for example, as 362404 + 152881 = 602^2 + 391^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-515285 is a prime.

It is a Duffinian number.

It is a Curzon 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 515285.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1085 + ... + 1485.

It is an arithmetic number, because the mean of its divisors is an integer number (77787).

2⁵¹⁵²⁸⁵ is an apocalyptic number.

It is an amenable number.

515285 is a deficient number, since it is larger than the sum of its proper divisors (107011).

515285 is a wasteful number, since it uses less digits than its factorization.

515285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663.

The product of its digits is 2000, while the sum is 26.

The square root of 515285 is about 717.8335461651. The cubic root of 515285 is about 80.1707291353.

The spelling of 515285 in words is "five hundred fifteen thousand, two hundred eighty-five".