521201299 has 2 divisors, whose sum is σ = 521201300. Its totient is φ = 521201298.

The previous prime is 521201297. The next prime is 521201327. The reversal of 521201299 is 992102125.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 521201299 - 2¹ = 521201297 is a prime.

Together with 521201297, it forms a pair of twin primes.

It is equal to p_27412366 and since 521201299 and 27412366 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 521201299.

It is not a weakly prime, because it can be changed into another prime (521201297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260600649 + 260600650.

It is an arithmetic number, because the mean of its divisors is an integer number (260600650).

Almost surely, 2^521201299 is an apocalyptic number.

521201299 is a deficient number, since it is larger than the sum of its proper divisors (1).

521201299 is an equidigital number, since it uses as much as digits as its factorization.

521201299 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 521201299 is about 22829.8335298355. The cubic root of 521201299 is about 804.7639182717.

The spelling of 521201299 in words is "five hundred twenty-one million, two hundred one thousand, two hundred ninety-nine".