506458 has 4 divisors (see below), whose sum is σ = 759690. Its totient is φ = 253228.

The previous prime is 506449. The next prime is 506459. The reversal of 506458 is 854605.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 854605 = 5 ⋅170921.

It can be written as a sum of positive squares in only one way, i.e., 288369 + 218089 = 537^2 + 467^2 .

It is not an unprimeable number, because it can be changed into a prime (506459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126613 + ... + 126616.

2⁵⁰⁶⁴⁵⁸ is an apocalyptic number.

506458 is a deficient number, since it is larger than the sum of its proper divisors (253232).

506458 is a wasteful number, since it uses less digits than its factorization.

506458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253231.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 506458 is about 711.6586260280. The cubic root of 506458 is about 79.7103064032.

It can be divided in two parts, 50645 and 8, that added together give a cube (50653 = 37³).

The spelling of 506458 in words is "five hundred six thousand, four hundred fifty-eight".