500055511550 has 48 divisors (see below), whose sum is σ = 1063422984192. Its totient is φ = 171375372000.

The previous prime is 500055511541. The next prime is 500055511567. The reversal of 500055511550 is 55115550005.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 534275 + ... + 1133825.

It is an arithmetic number, because the mean of its divisors is an integer number (22154645504).

Almost surely, 2^500055511550 is an apocalyptic number.

500055511550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

500055511550 is an abundant number, since it is smaller than the sum of its proper divisors (563367472642).

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

500055511550 is a wasteful number, since it uses less digits than its factorization.

500055511550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601953 (or 601948 counting only the distinct ones).

The product of its (nonzero) digits is 15625, while the sum is 32.

It can be divided in two parts, 5000555 and 11550, that added together give a palindrome (5012105).

The spelling of 500055511550 in words is "five hundred billion, fifty-five million, five hundred eleven thousand, five hundred fifty".