505258 has 8 divisors (see below), whose sum is σ = 816228. Its totient is φ = 233184.

The previous prime is 505237. The next prime is 505277. The reversal of 505258 is 852505.

It can be written as a sum of positive squares in 2 ways, for example, as 413449 + 91809 = 643^2 + 303^2 .

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

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

505258 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9691 + ... + 9742.

2⁵⁰⁵²⁵⁸ is an apocalyptic number.

505258 is a deficient number, since it is larger than the sum of its proper divisors (310970).

505258 is a wasteful number, since it uses less digits than its factorization.

505258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19448.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 505258 is about 710.8150251648. The cubic root of 505258 is about 79.6473014989.

The spelling of 505258 in words is "five hundred five thousand, two hundred fifty-eight".