505000005550 has 12 divisors (see below), whose sum is σ = 939300010416. Its totient is φ = 202000002200.

The previous prime is 505000005533. The next prime is 505000005583. The reversal of 505000005550 is 55500000505.

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 polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5050000006 + ... + 5050000105.

It is an arithmetic number, because the mean of its divisors is an integer number (78275000868).

Almost surely, 2^505000005550 is an apocalyptic number.

505000005550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

505000005550 is a deficient number, since it is larger than the sum of its proper divisors (434300004866).

505000005550 is a wasteful number, since it uses less digits than its factorization.

505000005550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10100000123 (or 10100000118 counting only the distinct ones).

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

The spelling of 505000005550 in words is "five hundred five billion, five thousand, five hundred fifty".