521201327 has 2 divisors, whose sum is σ = 521201328. Its totient is φ = 521201326.

The previous prime is 521201299. The next prime is 521201333. The reversal of 521201327 is 723102125.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 521201327 - 2¹² = 521197231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (521201227) 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, 260600663 + 260600664.

It is an arithmetic number, because the mean of its divisors is an integer number (260600664).

Almost surely, 2^521201327 is an apocalyptic number.

521201327 is a deficient number, since it is larger than the sum of its proper divisors (1).

521201327 is an equidigital number, since it uses as much as digits as its factorization.

521201327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 521201327 is about 22829.8341430681. The cubic root of 521201327 is about 804.7639326829.

The spelling of 521201327 in words is "five hundred twenty-one million, two hundred one thousand, three hundred twenty-seven".