505555027550 has 12 divisors (see below), whose sum is σ = 940332351336. Its totient is φ = 202222011000.

The previous prime is 505555027547. The next prime is 505555027567. The reversal of 505555027550 is 55720555505.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 5055550226 + ... + 5055550325.

It is an arithmetic number, because the mean of its divisors is an integer number (78361029278).

Almost surely, 2^505555027550 is an apocalyptic number.

505555027550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

505555027550 is a deficient number, since it is larger than the sum of its proper divisors (434777323786).

505555027550 is a wasteful number, since it uses less digits than its factorization.

505555027550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10111100563 (or 10111100558 counting only the distinct ones).

The product of its (nonzero) digits is 1093750, while the sum is 44.

The spelling of 505555027550 in words is "five hundred five billion, five hundred fifty-five million, twenty-seven thousand, five hundred fifty".