55005550051 has 4 divisors (see below), whose sum is σ = 56043390672. Its totient is φ = 53967709432.

The previous prime is 55005550003. The next prime is 55005550063. The reversal of 55005550051 is 15005550055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55005550051 - 2¹⁵ = 55005517283 is a prime.

It is a super-2 number, since 2×55005550051² (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 = 55005549995 and 55005550022.

It is not an unprimeable number, because it can be changed into a prime (55005550751) 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 3 ways as a sum of consecutive naturals, for example, 518920231 + ... + 518920336.

It is an arithmetic number, because the mean of its divisors is an integer number (14010847668).

Almost surely, 2^55005550051 is an apocalyptic number.

55005550051 is a deficient number, since it is larger than the sum of its proper divisors (1037840621).

55005550051 is a wasteful number, since it uses less digits than its factorization.

55005550051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037840620.

The product of its (nonzero) digits is 15625, while the sum is 31.

The spelling of 55005550051 in words is "fifty-five billion, five million, five hundred fifty thousand, fifty-one".