506052221 has 4 divisors (see below), whose sum is σ = 508621212. Its totient is φ = 503483232.

The previous prime is 506052203. The next prime is 506052241. The reversal of 506052221 is 122250605.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122250605 = 5 ⋅24450121.

It can be written as a sum of positive squares in 2 ways, for example, as 324180025 + 181872196 = 18005^2 + 13486^2 .

It is a cyclic number.

It is not a de Polignac number, because 506052221 - 2¹⁰ = 506051197 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 (506052241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1284200 + ... + 1284593.

It is an arithmetic number, because the mean of its divisors is an integer number (127155303).

Almost surely, 2^506052221 is an apocalyptic number.

It is an amenable number.

506052221 is a deficient number, since it is larger than the sum of its proper divisors (2568991).

506052221 is a wasteful number, since it uses less digits than its factorization.

506052221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2568990.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 506052221 is about 22495.6044817649. The cubic root of 506052221 is about 796.8901249489.

The spelling of 506052221 in words is "five hundred six million, fifty-two thousand, two hundred twenty-one".