505555000055 has 16 divisors (see below), whose sum is σ = 734116841280. Its totient is φ = 326274150912.

The previous prime is 505555000039. The next prime is 505555000057. The reversal of 505555000055 is 550000555505.

It is a cyclic number.

It is not a de Polignac number, because 505555000055 - 2⁴ = 505555000039 is a prime.

It is a super-2 number, since 2×505555000055² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a junction number, because it is equal to n+sod(n) for n = 505554999979 and 505555000024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505555000057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 424835540 + ... + 424836729.

It is an arithmetic number, because the mean of its divisors is an integer number (45882302580).

Almost surely, 2^505555000055 is an apocalyptic number.

505555000055 is a deficient number, since it is larger than the sum of its proper divisors (228561841225).

505555000055 is a wasteful number, since it uses less digits than its factorization.

505555000055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849672298.

The product of its (nonzero) digits is 78125, while the sum is 35.

The spelling of 505555000055 in words is "five hundred five billion, five hundred fifty-five million, fifty-five", and thus it is an aban number.