512045 has 4 divisors (see below), whose sum is σ = 614460. Its totient is φ = 409632.

The previous prime is 512021. The next prime is 512047. The reversal of 512045 is 540215.

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 405769 + 106276 = 637^2 + 326^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-512045 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512047) 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, 51200 + ... + 51209.

It is an arithmetic number, because the mean of its divisors is an integer number (153615).

2⁵¹²⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

512045 is a deficient number, since it is larger than the sum of its proper divisors (102415).

512045 is a wasteful number, since it uses less digits than its factorization.

512045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102414.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 512045 is about 715.5731968150. The cubic root of 512045 is about 80.0023436813.

It can be divided in two parts, 5120 and 45, that multiplied together give a square (230400 = 480²).

The spelling of 512045 in words is "five hundred twelve thousand, forty-five".