2001860055 has 128 divisors (see below), whose sum is σ = 4023613440. Its totient is φ = 937681920.

The previous prime is 2001860051. The next prime is 2001860059. The reversal of 2001860055 is 5500681002.

2001860055 is a `hidden beast` number, since 2 + 0 + 0 + 1 + 8 + 600 + 55 = 666.

It is an interprime number because it is at equal distance from previous prime (2001860051) and next prime (2001860059).

It is not a de Polignac number, because 2001860055 - 2² = 2001860051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001860051) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3093742 + ... + 3094388.

It is an arithmetic number, because the mean of its divisors is an integer number (31434480).

Almost surely, 2^2001860055 is an apocalyptic number.

2001860055 is an abundant number, since it is smaller than the sum of its proper divisors (2021753385).

2001860055 is a wasteful number, since it uses less digits than its factorization.

2001860055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758 (or 752 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 2001860055 is about 44742.1507641284. The cubic root of 2001860055 is about 1260.3115159466.

The spelling of 2001860055 in words is "two billion, one million, eight hundred sixty thousand, fifty-five".