505005555051 has 24 divisors (see below), whose sum is σ = 742456991120. Its totient is φ = 330683860800.

The previous prime is 505005555037. The next prime is 505005555133. The reversal of 505005555051 is 150555500505.

It is a happy number.

505005555051 is a `hidden beast` number, since 5 + 0 + 5 + 0 + 0 + 55 + 550 + 51 = 666.

It is not a de Polignac number, because 505005555051 - 2⁹ = 505005554539 is a prime.

It is a super-2 number, since 2×505005555051² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505005554997 and 505005555015.

It is not an unprimeable number, because it can be changed into a prime (505005555251) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 259465 + ... + 1037946.

Almost surely, 2^505005555051 is an apocalyptic number.

505005555051 is a deficient number, since it is larger than the sum of its proper divisors (237451436069).

505005555051 is a wasteful number, since it uses less digits than its factorization.

505005555051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298187 (or 1298184 counting only the distinct ones).

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

The spelling of 505005555051 in words is "five hundred five billion, five million, five hundred fifty-five thousand, fifty-one".