2160171555 has 32 divisors (see below), whose sum is σ = 3758508864. Its totient is φ = 1055010816.

The previous prime is 2160171539. The next prime is 2160171571. The reversal of 2160171555 is 5551710612.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2160171539) and next prime (2160171571).

It is not a de Polignac number, because 2160171555 - 2⁴ = 2160171539 is a prime.

It is a super-2 number, since 2×2160171555² = 9332682294062236050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105042 + ... + 123911.

It is an arithmetic number, because the mean of its divisors is an integer number (117453402).

Almost surely, 2^2160171555 is an apocalyptic number.

2160171555 is a deficient number, since it is larger than the sum of its proper divisors (1598337309).

2160171555 is a wasteful number, since it uses less digits than its factorization.

2160171555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229015.

The product of its (nonzero) digits is 10500, while the sum is 33.

The square root of 2160171555 is about 46477.6457557824. The cubic root of 2160171555 is about 1292.6950357097.

The spelling of 2160171555 in words is "two billion, one hundred sixty million, one hundred seventy-one thousand, five hundred fifty-five".