55555000051 has 2 divisors, whose sum is σ = 55555000052. Its totient is φ = 55555000050.

The previous prime is 55555000031. The next prime is 55555000079. The reversal of 55555000051 is 15000055555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55555000051 - 2⁷ = 55554999923 is a prime.

It is a super-3 number, since 3×55555000051³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 55554999977 and 55555000022.

It is not a weakly prime, because it can be changed into another prime (55555000021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27777500025 + 27777500026.

It is an arithmetic number, because the mean of its divisors is an integer number (27777500026).

Almost surely, 2^55555000051 is an apocalyptic number.

55555000051 is a deficient number, since it is larger than the sum of its proper divisors (1).

55555000051 is an equidigital number, since it uses as much as digits as its factorization.

55555000051 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 55555000051 in words is "fifty-five billion, five hundred fifty-five million, fifty-one", and thus it is an aban number.