512305 has 4 divisors (see below), whose sum is σ = 614772. Its totient is φ = 409840.

The previous prime is 512287. The next prime is 512311. The reversal of 512305 is 503215.

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

It can be written as a sum of positive squares in 2 ways, for example, as 80656 + 431649 = 284^2 + 657^2 .

It is not a de Polignac number, because 512305 - 2⁹ = 511793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51226 + ... + 51235.

It is an arithmetic number, because the mean of its divisors is an integer number (153693).

2⁵¹²³⁰⁵ is an apocalyptic number.

It is an amenable number.

512305 is a deficient number, since it is larger than the sum of its proper divisors (102467).

512305 is a wasteful number, since it uses less digits than its factorization.

512305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102466.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 512305 is about 715.7548462986. The cubic root of 512305 is about 80.0158822634.

The spelling of 512305 in words is "five hundred twelve thousand, three hundred five".