505050550 has 24 divisors (see below), whose sum is σ = 941180832. Its totient is φ = 201636000.

The previous prime is 505050529. The next prime is 505050563. The reversal of 505050550 is 55050505.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17715 + ... + 36385.

It is an arithmetic number, because the mean of its divisors is an integer number (39215868).

Almost surely, 2^505050550 is an apocalyptic number.

505050550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

505050550 is a deficient number, since it is larger than the sum of its proper divisors (436130282).

505050550 is a wasteful number, since it uses less digits than its factorization.

505050550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19224 (or 19219 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 25.

The square root of 505050550 is about 22473.3297488378. The cubic root of 505050550 is about 796.3639941550.

The spelling of 505050550 in words is "five hundred five million, fifty thousand, five hundred fifty".