501068993 has 2 divisors, whose sum is σ = 501068994. Its totient is φ = 501068992.

The previous prime is 501068977. The next prime is 501069013. The reversal of 501068993 is 399860105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 412577344 + 88491649 = 20312^2 + 9407^2 .

It is a cyclic number.

It is not a de Polignac number, because 501068993 - 2⁴ = 501068977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 501068993.

It is not a weakly prime, because it can be changed into another prime (501068933) 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, 250534496 + 250534497.

It is an arithmetic number, because the mean of its divisors is an integer number (250534497).

Almost surely, 2^501068993 is an apocalyptic number.

It is an amenable number.

501068993 is a deficient number, since it is larger than the sum of its proper divisors (1).

501068993 is an equidigital number, since it uses as much as digits as its factorization.

501068993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 501068993 is about 22384.5704225031. The cubic root of 501068993 is about 794.2657635562.

The spelling of 501068993 in words is "five hundred one million, sixty-eight thousand, nine hundred ninety-three".