555505500051 has 6 divisors (see below), whose sum is σ = 802396833420. Its totient is φ = 370337000028.

The previous prime is 555505500047. The next prime is 555505500061. The reversal of 555505500051 is 150005505555.

It is a happy number.

555505500051 is a `hidden beast` number, since 5 + 5 + 5 + 50 + 550 + 0 + 0 + 51 = 666.

It is not a de Polignac number, because 555505500051 - 2² = 555505500047 is a prime.

It is a super-2 number, since 2×555505500051² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 555505499979 and 555505500015.

It is not an unprimeable number, because it can be changed into a prime (555505500061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30861416661 + ... + 30861416678.

It is an arithmetic number, because the mean of its divisors is an integer number (133732805570).

Almost surely, 2^555505500051 is an apocalyptic number.

555505500051 is a deficient number, since it is larger than the sum of its proper divisors (246891333369).

555505500051 is a wasteful number, since it uses less digits than its factorization.

555505500051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61722833345 (or 61722833342 counting only the distinct ones).

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

The spelling of 555505500051 in words is "five hundred fifty-five billion, five hundred five million, five hundred thousand, fifty-one".