536218321 has 2 divisors, whose sum is σ = 536218322. Its totient is φ = 536218320.

The previous prime is 536218313. The next prime is 536218363. The reversal of 536218321 is 123812635.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 425968321 + 110250000 = 20639^2 + 10500^2 .

It is a cyclic number.

It is not a de Polignac number, because 536218321 - 2³ = 536218313 is a prime.

It is not a weakly prime, because it can be changed into another prime (536210321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268109160 + 268109161.

It is an arithmetic number, because the mean of its divisors is an integer number (268109161).

Almost surely, 2^536218321 is an apocalyptic number.

It is an amenable number.

536218321 is a deficient number, since it is larger than the sum of its proper divisors (1).

536218321 is an equidigital number, since it uses as much as digits as its factorization.

536218321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 31.

The square root of 536218321 is about 23156.3883410173. The cubic root of 536218321 is about 812.4198938302.

The spelling of 536218321 in words is "five hundred thirty-six million, two hundred eighteen thousand, three hundred twenty-one".