505000501 has 2 divisors, whose sum is σ = 505000502. Its totient is φ = 505000500.

The previous prime is 505000499. The next prime is 505000511. The reversal of 505000501 is 105000505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 504002500 + 998001 = 22450^2 + 999^2 .

It is a cyclic number.

It is not a de Polignac number, because 505000501 - 2¹ = 505000499 is a prime.

Together with 505000499, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505000511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252500250 + 252500251.

It is an arithmetic number, because the mean of its divisors is an integer number (252500251).

Almost surely, 2^505000501 is an apocalyptic number.

It is an amenable number.

505000501 is a deficient number, since it is larger than the sum of its proper divisors (1).

505000501 is an equidigital number, since it uses as much as digits as its factorization.

505000501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 125, while the sum is 16.

The square root of 505000501 is about 22472.2162013452. The cubic root of 505000501 is about 796.3376875221.

The spelling of 505000501 in words is "five hundred five million, five hundred one", and thus it is an aban number.