510005 has 4 divisors (see below), whose sum is σ = 612012. Its totient is φ = 408000.

The previous prime is 509989. The next prime is 510007. The reversal of 510005 is 500015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500015 = 5 ⋅100003.

It can be written as a sum of positive squares in 2 ways, for example, as 88804 + 421201 = 298^2 + 649^2 .

It is not a de Polignac number, because 510005 - 2⁴ = 509989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (510007) 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, 50996 + ... + 51005.

It is an arithmetic number, because the mean of its divisors is an integer number (153003).

2⁵¹⁰⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

510005 is a deficient number, since it is larger than the sum of its proper divisors (102007).

510005 is a wasteful number, since it uses less digits than its factorization.

510005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102006.

The product of its (nonzero) digits is 25, while the sum is 11.

The square root of 510005 is about 714.1463435459. The cubic root of 510005 is about 79.8959585007.

The spelling of 510005 in words is "five hundred ten thousand, five".