505055553255 has 24 divisors (see below), whose sum is σ = 955014138000. Its totient is φ = 244875419520.

The previous prime is 505055553227. The next prime is 505055553259. The reversal of 505055553255 is 552355550505.

It is not a de Polignac number, because 505055553255 - 2¹⁴ = 505055536871 is a prime.

It is a super-2 number, since 2×505055553255² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 505055553255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505055553259) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 510156630 + ... + 510157619.

It is an arithmetic number, because the mean of its divisors is an integer number (39792255750).

Almost surely, 2^505055553255 is an apocalyptic number.

505055553255 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

505055553255 is a deficient number, since it is larger than the sum of its proper divisors (449958584745).

505055553255 is a wasteful number, since it uses less digits than its factorization.

505055553255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020314271 (or 1020314268 counting only the distinct ones).

The product of its (nonzero) digits is 2343750, while the sum is 45.

The spelling of 505055553255 in words is "five hundred five billion, fifty-five million, five hundred fifty-three thousand, two hundred fifty-five".