502445 has 6 divisors (see below), whose sum is σ = 604842. Its totient is φ = 400688.

The previous prime is 502441. The next prime is 502451. The reversal of 502445 is 544205.

It is a happy number.

502445 is nontrivially palindromic in base 4.

It can be written as a sum of positive squares in 3 ways, for example, as 24964 + 477481 = 158^2 + 691^2 .

It is not a de Polignac number, because 502445 - 2² = 502441 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (502441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1427 + ... + 1743.

It is an arithmetic number, because the mean of its divisors is an integer number (100807).

2⁵⁰²⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

502445 is a deficient number, since it is larger than the sum of its proper divisors (102397).

502445 is an frugal number, since it uses more digits than its factorization.

502445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 502445 is about 708.8335488674. The cubic root of 502445 is about 79.4992154769.

Multiplying 502445 by its sum of digits (20), we get a square (10048900 = 3170²).

The spelling of 502445 in words is "five hundred two thousand, four hundred forty-five".