504255511145521 has 12 divisors (see below), whose sum is σ = 536045318737600. Its totient is φ = 474254184260160.

The previous prime is 504255511145513. The next prime is 504255511145527. The reversal of 504255511145521 is 125541115552405.

It is not a de Polignac number, because 504255511145521 - 2³ = 504255511145513 is a prime.

It is a super-2 number, since 2×504255511145521² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (504255511145527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 623194245 + ... + 624002866.

Almost surely, 2^{504255511145521} is an apocalyptic number.

It is an amenable number.

504255511145521 is a deficient number, since it is larger than the sum of its proper divisors (31789807592079).

504255511145521 is a wasteful number, since it uses less digits than its factorization.

504255511145521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247198544 (or 1247198527 counting only the distinct ones).

The product of its (nonzero) digits is 1000000, while the sum is 46.

Adding to 504255511145521 its reverse (125541115552405), we get a palindrome (629796626697926).

The spelling of 504255511145521 in words is "five hundred four trillion, two hundred fifty-five billion, five hundred eleven million, one hundred forty-five thousand, five hundred twenty-one".