55555005000051 has 24 divisors (see below), whose sum is σ = 82499287925184. Its totient is φ = 35998794696960.

The previous prime is 55555005000043. The next prime is 55555005000109. The reversal of 55555005000051 is 15000050055555.

It is a happy number.

55555005000051 is a `hidden beast` number, since 5 + 5 + 5 + 550 + 0 + 50 + 0 + 0 + 0 + 51 = 666.

55555005000051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55555005000051 - 2³ = 55555005000043 is a prime.

It is a super-2 number, since 2×55555005000051² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55555005000151) 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, 85054315 + ... + 85704996.

It is an arithmetic number, because the mean of its divisors is an integer number (3437470330216).

Almost surely, 2^{55555005000051} is an apocalyptic number.

55555005000051 is a deficient number, since it is larger than the sum of its proper divisors (26944282925133).

55555005000051 is a wasteful number, since it uses less digits than its factorization.

55555005000051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170760331 (or 170760328 counting only the distinct ones).

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

The spelling of 55555005000051 in words is "fifty-five trillion, five hundred fifty-five billion, five million, fifty-one", and thus it is an aban number.