505530275553 has 20 divisors (see below), whose sum is σ = 762651847188. Its totient is φ = 333683344800.

The previous prime is 505530275461. The next prime is 505530275557. The reversal of 505530275553 is 355572035505.

It can be written as a sum of positive squares in 2 ways, for example, as 378874718784 + 126655556769 = 615528^2 + 355887^2 .

It is not a de Polignac number, because 505530275553 - 2¹⁷ = 505530144481 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505530275499 and 505530275508.

It is not an unprimeable number, because it can be changed into a prime (505530275557) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 30888426 + ... + 30904787.

Almost surely, 2^505530275553 is an apocalyptic number.

It is an amenable number.

505530275553 is a deficient number, since it is larger than the sum of its proper divisors (257121571635).

505530275553 is a wasteful number, since it uses less digits than its factorization.

505530275553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61793326 (or 61793317 counting only the distinct ones).

The product of its (nonzero) digits is 1968750, while the sum is 45.

The spelling of 505530275553 in words is "five hundred five billion, five hundred thirty million, two hundred seventy-five thousand, five hundred fifty-three".