500642641 has 4 divisors (see below), whose sum is σ = 500690484. Its totient is φ = 500594800.

The previous prime is 500642627. The next prime is 500642669. The reversal of 500642641 is 146246005.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 146246005 = 5 ⋅29249201.

It can be written as a sum of positive squares in 2 ways, for example, as 201214225 + 299428416 = 14185^2 + 17304^2 .

It is a cyclic number.

It is not a de Polignac number, because 500642641 - 2¹¹ = 500640593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (500642141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 730 + ... + 31651.

It is an arithmetic number, because the mean of its divisors is an integer number (125172621).

Almost surely, 2^500642641 is an apocalyptic number.

It is an amenable number.

500642641 is a deficient number, since it is larger than the sum of its proper divisors (47843).

500642641 is a wasteful number, since it uses less digits than its factorization.

500642641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47842.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 500642641 is about 22375.0450502340. The cubic root of 500642641 is about 794.0404234041.

Adding to 500642641 its reverse (146246005), we get a palindrome (646888646).

The spelling of 500642641 in words is "five hundred million, six hundred forty-two thousand, six hundred forty-one".