520465 has 8 divisors (see below), whose sum is σ = 681408. Its totient is φ = 378480.

The previous prime is 520451. The next prime is 520529. The reversal of 520465 is 564025.

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

It is not a de Polignac number, because 520465 - 2⁵ = 520433 is a prime.

It is a Duffinian number.

520465 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4677 + ... + 4786.

It is an arithmetic number, because the mean of its divisors is an integer number (85176).

2⁵²⁰⁴⁶⁵ is an apocalyptic number.

520465 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

520465 is a deficient number, since it is larger than the sum of its proper divisors (160943).

520465 is a wasteful number, since it uses less digits than its factorization.

520465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9479.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 520465 is about 721.4326025347. The cubic root of 520465 is about 80.4384777418.

The spelling of 520465 in words is "five hundred twenty thousand, four hundred sixty-five".