521344699 has 2 divisors, whose sum is σ = 521344700. Its totient is φ = 521344698.

The previous prime is 521344619. The next prime is 521344717. The reversal of 521344699 is 996443125.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 521344699 - 2¹¹ = 521342651 is a prime.

It is not a weakly prime, because it can be changed into another prime (521344609) 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, 260672349 + 260672350.

It is an arithmetic number, because the mean of its divisors is an integer number (260672350).

Almost surely, 2^521344699 is an apocalyptic number.

521344699 is a deficient number, since it is larger than the sum of its proper divisors (1).

521344699 is an equidigital number, since it uses as much as digits as its factorization.

521344699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 43.

The square root of 521344699 is about 22832.9739412105. The cubic root of 521344699 is about 804.8377173739.

The spelling of 521344699 in words is "five hundred twenty-one million, three hundred forty-four thousand, six hundred ninety-nine".