501251983 has 2 divisors, whose sum is σ = 501251984. Its totient is φ = 501251982.

The previous prime is 501251969. The next prime is 501252001. The reversal of 501251983 is 389152105.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 501251983 - 2⁵ = 501251951 is a prime.

It is a super-2 number, since 2×501251983² = 502507100922864578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501251923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250625991 + 250625992.

It is an arithmetic number, because the mean of its divisors is an integer number (250625992).

Almost surely, 2^501251983 is an apocalyptic number.

501251983 is a deficient number, since it is larger than the sum of its proper divisors (1).

501251983 is an equidigital number, since it uses as much as digits as its factorization.

501251983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 501251983 is about 22388.6574630995. The cubic root of 501251983 is about 794.3624401980.

The spelling of 501251983 in words is "five hundred one million, two hundred fifty-one thousand, nine hundred eighty-three".