500616021 has 4 divisors (see below), whose sum is σ = 667488032. Its totient is φ = 333744012.

The previous prime is 500616013. The next prime is 500616023. The reversal of 500616021 is 120616005.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 500616021 - 2³ = 500616013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500616023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83436001 + ... + 83436006.

It is an arithmetic number, because the mean of its divisors is an integer number (166872008).

Almost surely, 2^500616021 is an apocalyptic number.

It is an amenable number.

500616021 is a deficient number, since it is larger than the sum of its proper divisors (166872011).

500616021 is a wasteful number, since it uses less digits than its factorization.

500616021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166872010.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 500616021 is about 22374.4501831889. The cubic root of 500616021 is about 794.0263496724.

The spelling of 500616021 in words is "five hundred million, six hundred sixteen thousand, twenty-one".