501983513 has 2 divisors, whose sum is σ = 501983514. Its totient is φ = 501983512.

The previous prime is 501983509. The next prime is 501983519. The reversal of 501983513 is 315389105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 499433104 + 2550409 = 22348^2 + 1597^2 .

It is a cyclic number.

It is not a de Polignac number, because 501983513 - 2² = 501983509 is a prime.

It is not a weakly prime, because it can be changed into another prime (501983519) 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, 250991756 + 250991757.

It is an arithmetic number, because the mean of its divisors is an integer number (250991757).

Almost surely, 2^501983513 is an apocalyptic number.

It is an amenable number.

501983513 is a deficient number, since it is larger than the sum of its proper divisors (1).

501983513 is an equidigital number, since it uses as much as digits as its factorization.

501983513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 501983513 is about 22404.9885739761. The cubic root of 501983513 is about 794.7486847202.

The spelling of 501983513 in words is "five hundred one million, nine hundred eighty-three thousand, five hundred thirteen".