501506672549 has 2 divisors, whose sum is σ = 501506672550. Its totient is φ = 501506672548.

The previous prime is 501506672533. The next prime is 501506672581. The reversal of 501506672549 is 945276605105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 476334628900 + 25172043649 = 690170^2 + 158657^2 .

It is a cyclic number.

It is not a de Polignac number, because 501506672549 - 2⁴ = 501506672533 is a prime.

It is a super-2 number, since 2×501506672549² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 501506672497 and 501506672506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501506672509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250753336274 + 250753336275.

It is an arithmetic number, because the mean of its divisors is an integer number (250753336275).

Almost surely, 2^501506672549 is an apocalyptic number.

It is an amenable number.

501506672549 is a deficient number, since it is larger than the sum of its proper divisors (1).

501506672549 is an equidigital number, since it uses as much as digits as its factorization.

501506672549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268000, while the sum is 50.

The spelling of 501506672549 in words is "five hundred one billion, five hundred six million, six hundred seventy-two thousand, five hundred forty-nine".