55555055000171 has 2 divisors, whose sum is σ = 55555055000172. Its totient is φ = 55555055000170.

The previous prime is 55555055000143. The next prime is 55555055000189. The reversal of 55555055000171 is 17100055055555.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55555055000171 is a prime.

It is not a weakly prime, because it can be changed into another prime (55555055000101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27777527500085 + 27777527500086.

It is an arithmetic number, because the mean of its divisors is an integer number (27777527500086).

Almost surely, 2^{55555055000171} is an apocalyptic number.

55555055000171 is a deficient number, since it is larger than the sum of its proper divisors (1).

55555055000171 is an equidigital number, since it uses as much as digits as its factorization.

55555055000171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 546875, while the sum is 44.

The spelling of 55555055000171 in words is "fifty-five trillion, five hundred fifty-five billion, fifty-five million, one hundred seventy-one", and thus it is an aban number.