2085571287 has 16 divisors (see below), whose sum is σ = 3099682560. Its totient is φ = 1385904600.

The previous prime is 2085571277. The next prime is 2085571289. The reversal of 2085571287 is 7821755802.

2085571287 is a `hidden beast` number, since 2 + 0 + 8 + 557 + 12 + 87 = 666.

It is not a de Polignac number, because 2085571287 - 2⁶ = 2085571223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2085571289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115789 + ... + 132582.

It is an arithmetic number, because the mean of its divisors is an integer number (193730160).

Almost surely, 2^2085571287 is an apocalyptic number.

2085571287 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2085571287 is a deficient number, since it is larger than the sum of its proper divisors (1014111273).

2085571287 is a wasteful number, since it uses less digits than its factorization.

2085571287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248691 (or 248685 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 45.

The square root of 2085571287 is about 45668.0554326545. The cubic root of 2085571287 is about 1277.6395476661.

The spelling of 2085571287 in words is "two billion, eighty-five million, five hundred seventy-one thousand, two hundred eighty-seven".