505500551055 has 48 divisors (see below), whose sum is σ = 889592741856. Its totient is φ = 265500518400.

The previous prime is 505500551009. The next prime is 505500551063. The reversal of 505500551055 is 550155005505.

It is a happy number.

505500551055 is a `hidden beast` number, since 5 + 0 + 5 + 50 + 0 + 551 + 0 + 55 = 666.

It is not a de Polignac number, because 505500551055 - 2¹³ = 505500542863 is a prime.

It is a super-2 number, since 2×505500551055² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 952855 + ... + 1385255.

It is an arithmetic number, because the mean of its divisors is an integer number (18533182122).

Almost surely, 2^505500551055 is an apocalyptic number.

505500551055 is a deficient number, since it is larger than the sum of its proper divisors (384092190801).

505500551055 is a wasteful number, since it uses less digits than its factorization.

505500551055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432808 (or 432805 counting only the distinct ones).

The product of its (nonzero) digits is 78125, while the sum is 36.

The spelling of 505500551055 in words is "five hundred five billion, five hundred million, five hundred fifty-one thousand, fifty-five".