523053221 has 2 divisors, whose sum is σ = 523053222. Its totient is φ = 523053220.

The previous prime is 523053199. The next prime is 523053227. The reversal of 523053221 is 122350325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 330148900 + 192904321 = 18170^2 + 13889^2 .

It is a cyclic number.

It is not a de Polignac number, because 523053221 - 2¹⁸ = 522791077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523053227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261526610 + 261526611.

It is an arithmetic number, because the mean of its divisors is an integer number (261526611).

Almost surely, 2^523053221 is an apocalyptic number.

It is an amenable number.

523053221 is a deficient number, since it is larger than the sum of its proper divisors (1).

523053221 is an equidigital number, since it uses as much as digits as its factorization.

523053221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 523053221 is about 22870.3568183796. The cubic root of 523053221 is about 805.7159485856.

The spelling of 523053221 in words is "five hundred twenty-three million, fifty-three thousand, two hundred twenty-one".