521223341 has 2 divisors, whose sum is σ = 521223342. Its totient is φ = 521223340.

The previous prime is 521223331. The next prime is 521223407. The reversal of 521223341 is 143322125.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 477597316 + 43626025 = 21854^2 + 6605^2 .

It is a cyclic number.

It is not a de Polignac number, because 521223341 - 2¹⁴ = 521206957 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (521223331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260611670 + 260611671.

It is an arithmetic number, because the mean of its divisors is an integer number (260611671).

Almost surely, 2^521223341 is an apocalyptic number.

It is an amenable number.

521223341 is a deficient number, since it is larger than the sum of its proper divisors (1).

521223341 is an equidigital number, since it uses as much as digits as its factorization.

521223341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 23.

The square root of 521223341 is about 22830.3162702578. The cubic root of 521223341 is about 804.7752628049.

Adding to 521223341 its reverse (143322125), we get a palindrome (664545466).

The spelling of 521223341 in words is "five hundred twenty-one million, two hundred twenty-three thousand, three hundred forty-one".