505556050554 has 48 divisors (see below), whose sum is σ = 1125842707080. Its totient is φ = 163837814400.

The previous prime is 505556050541. The next prime is 505556050561. The reversal of 505556050554 is 455050655505.

It can be written as a sum of positive squares in 4 ways, for example, as 342523415025 + 163032635529 = 585255^2 + 403773^2 .

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 574732 + ... + 1158200.

Almost surely, 2^505556050554 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505556050554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (562921353540).

505556050554 is an abundant number, since it is smaller than the sum of its proper divisors (620286656526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505556050554 is a wasteful number, since it uses less digits than its factorization.

505556050554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584815 (or 584812 counting only the distinct ones).

The product of its (nonzero) digits is 1875000, while the sum is 45.

The spelling of 505556050554 in words is "five hundred five billion, five hundred fifty-six million, fifty thousand, five hundred fifty-four".