505145 has 8 divisors (see below), whose sum is σ = 625920. Its totient is φ = 390960.

The previous prime is 505139. The next prime is 505157. The reversal of 505145 is 541505.

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

It is not a de Polignac number, because 505145 - 2⁴ = 505129 is a prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 505145.

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, 1475 + ... + 1784.

It is an arithmetic number, because the mean of its divisors is an integer number (78240).

2⁵⁰⁵¹⁴⁵ is an apocalyptic number.

It is an amenable number.

505145 is a deficient number, since it is larger than the sum of its proper divisors (120775).

505145 is a wasteful number, since it uses less digits than its factorization.

505145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3295.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 505145 is about 710.7355344993. The cubic root of 505145 is about 79.6413633999.

The spelling of 505145 in words is "five hundred five thousand, one hundred forty-five".