506441213 has 4 divisors (see below), whose sum is σ = 506505180. Its totient is φ = 506377248.

The previous prime is 506441207. The next prime is 506441267. The reversal of 506441213 is 312144605.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312144605 = 5 ⋅62428921.

It can be written as a sum of positive squares in 2 ways, for example, as 97673689 + 408767524 = 9883^2 + 20218^2 .

It is a cyclic number.

It is not a de Polignac number, because 506441213 - 2¹⁴ = 506424829 is a prime.

It is a super-2 number, since 2×506441213² = 512965404449822738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506441293) 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, 18098 + ... + 36611.

It is an arithmetic number, because the mean of its divisors is an integer number (126626295).

Almost surely, 2^506441213 is an apocalyptic number.

It is an amenable number.

506441213 is a deficient number, since it is larger than the sum of its proper divisors (63967).

506441213 is an equidigital number, since it uses as much as digits as its factorization.

506441213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63966.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 506441213 is about 22504.2487766199. The cubic root of 506441213 is about 797.0942570380.

Adding to 506441213 its reverse (312144605), we get a palindrome (818585818).

The spelling of 506441213 in words is "five hundred six million, four hundred forty-one thousand, two hundred thirteen".