506707221 has 4 divisors (see below), whose sum is σ = 675609632. Its totient is φ = 337804812.

The previous prime is 506707213. The next prime is 506707231. The reversal of 506707221 is 122707605.

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 506707221 - 2³ = 506707213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506707231) 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, 84451201 + ... + 84451206.

It is an arithmetic number, because the mean of its divisors is an integer number (168902408).

Almost surely, 2^506707221 is an apocalyptic number.

It is an amenable number.

506707221 is a deficient number, since it is larger than the sum of its proper divisors (168902411).

506707221 is a wasteful number, since it uses less digits than its factorization.

506707221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168902410.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 506707221 is about 22510.1581735891. The cubic root of 506707221 is about 797.2337904008.

The spelling of 506707221 in words is "five hundred six million, seven hundred seven thousand, two hundred twenty-one".