500197021 has 4 divisors (see below), whose sum is σ = 526523200. Its totient is φ = 473870844.

The previous prime is 500197003. The next prime is 500197037. The reversal of 500197021 is 120791005.

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, and also an emirpimes, since its reverse is a distinct semiprime: 120791005 = 5 ⋅24158201.

It is a cyclic number.

It is not a de Polignac number, because 500197021 - 2⁹ = 500196509 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 (500197051) 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, 13163061 + ... + 13163098.

It is an arithmetic number, because the mean of its divisors is an integer number (131630800).

Almost surely, 2^500197021 is an apocalyptic number.

It is an amenable number.

500197021 is a deficient number, since it is larger than the sum of its proper divisors (26326179).

500197021 is a wasteful number, since it uses less digits than its factorization.

500197021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26326178.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 500197021 is about 22365.0848645830. The cubic root of 500197021 is about 793.8047627416.

The spelling of 500197021 in words is "five hundred million, one hundred ninety-seven thousand, twenty-one".