501505241 has 2 divisors, whose sum is σ = 501505242. Its totient is φ = 501505240.

The previous prime is 501505231. The next prime is 501505267. The reversal of 501505241 is 142505105.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 476505241 + 25000000 = 21829^2 + 5000^2 .

It is a cyclic number.

It is not a de Polignac number, because 501505241 - 2⁶ = 501505177 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (501505201) 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, 250752620 + 250752621.

It is an arithmetic number, because the mean of its divisors is an integer number (250752621).

Almost surely, 2^501505241 is an apocalyptic number.

It is an amenable number.

501505241 is a deficient number, since it is larger than the sum of its proper divisors (1).

501505241 is an equidigital number, since it uses as much as digits as its factorization.

501505241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 501505241 is about 22394.3126931817. The cubic root of 501505241 is about 794.4962017772.

The spelling of 501505241 in words is "five hundred one million, five hundred five thousand, two hundred forty-one".