501027641 has 2 divisors, whose sum is σ = 501027642. Its totient is φ = 501027640.

The previous prime is 501027629. The next prime is 501027643. The reversal of 501027641 is 146720105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 270109225 + 230918416 = 16435^2 + 15196^2 .

It is a cyclic number.

It is not a de Polignac number, because 501027641 - 2¹⁴ = 501011257 is a prime.

Together with 501027643, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 501027641.

It is not a weakly prime, because it can be changed into another prime (501027643) 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, 250513820 + 250513821.

It is an arithmetic number, because the mean of its divisors is an integer number (250513821).

Almost surely, 2^501027641 is an apocalyptic number.

It is an amenable number.

501027641 is a deficient number, since it is larger than the sum of its proper divisors (1).

501027641 is an equidigital number, since it uses as much as digits as its factorization.

501027641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 501027641 is about 22383.6467314868. The cubic root of 501027641 is about 794.2439133507.

Adding to 501027641 its reverse (146720105), we get a palindrome (647747746).

The spelling of 501027641 in words is "five hundred one million, twenty-seven thousand, six hundred forty-one".