505000004550 has 24 divisors (see below), whose sum is σ = 1252400011656. Its totient is φ = 134666667840.

The previous prime is 505000004519. The next prime is 505000004617. The reversal of 505000004550 is 55400000505.

It is a self number, because there is not a number n which added to its sum of digits gives 505000004550.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1683333199 + ... + 1683333498.

It is an arithmetic number, because the mean of its divisors is an integer number (52183333819).

Almost surely, 2^505000004550 is an apocalyptic number.

505000004550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

505000004550 is an abundant number, since it is smaller than the sum of its proper divisors (747400007106).

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

505000004550 is a wasteful number, since it uses less digits than its factorization.

505000004550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3366666712 (or 3366666707 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 24.

The spelling of 505000004550 in words is "five hundred five billion, four thousand, five hundred fifty".