55505505051 has 6 divisors (see below), whose sum is σ = 80174618420. Its totient is φ = 37003670028.

The previous prime is 55505505047. The next prime is 55505505061. The reversal of 55505505051 is 15050550555.

It is a happy number.

55505505051 is a `hidden beast` number, since 5 + 5 + 5 + 0 + 550 + 50 + 51 = 666.

It is not a de Polignac number, because 55505505051 - 2² = 55505505047 is a prime.

It is a super-2 number, since 2×55505505051² (a number of 22 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 = 55505504997 and 55505505015.

It is not an unprimeable number, because it can be changed into a prime (55505505031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3083639161 + ... + 3083639178.

Almost surely, 2^55505505051 is an apocalyptic number.

55505505051 is a deficient number, since it is larger than the sum of its proper divisors (24669113369).

55505505051 is a wasteful number, since it uses less digits than its factorization.

55505505051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6167278345 (or 6167278342 counting only the distinct ones).

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

The spelling of 55505505051 in words is "fifty-five billion, five hundred five million, five hundred five thousand, fifty-one".