506054221 has 2 divisors, whose sum is σ = 506054222. Its totient is φ = 506054220.

The previous prime is 506054203. The next prime is 506054243. The reversal of 506054221 is 122450605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 275925321 + 230128900 = 16611^2 + 15170^2 .

It is a cyclic number.

It is not a de Polignac number, because 506054221 - 2¹⁹ = 505529933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (506054281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253027110 + 253027111.

It is an arithmetic number, because the mean of its divisors is an integer number (253027111).

Almost surely, 2^506054221 is an apocalyptic number.

It is an amenable number.

506054221 is a deficient number, since it is larger than the sum of its proper divisors (1).

506054221 is an equidigital number, since it uses as much as digits as its factorization.

506054221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 506054221 is about 22495.6489348496. The cubic root of 506054221 is about 796.8911747602.

The spelling of 506054221 in words is "five hundred six million, fifty-four thousand, two hundred twenty-one".