506445 has 16 divisors (see below), whose sum is σ = 853440. Its totient is φ = 255744.

The previous prime is 506423. The next prime is 506449. The reversal of 506445 is 544605.

It is not a de Polignac number, because 506445 - 2⁶ = 506381 is a prime.

506445 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 604 + ... + 1173.

It is an arithmetic number, because the mean of its divisors is an integer number (53340).

2⁵⁰⁶⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

506445 is a deficient number, since it is larger than the sum of its proper divisors (346995).

506445 is a wasteful number, since it uses less digits than its factorization.

506445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 506445 is about 711.6494923767. The cubic root of 506445 is about 79.7096243836.

The spelling of 506445 in words is "five hundred six thousand, four hundred forty-five".