855021168 has 60 divisors (see below), whose sum is σ = 2470074048. Its totient is φ = 275811840.

The previous prime is 855021157. The next prime is 855021169. The reversal of 855021168 is 861120558.

855021168 is a `hidden beast` number, since 85 + 502 + 11 + 68 = 666.

It is a super-2 number, since 2×855021168² = 1462122395456168448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855021169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91305 + ... + 100232.

Almost surely, 2^855021168 is an apocalyptic number.

It is an amenable number.

855021168 is an abundant number, since it is smaller than the sum of its proper divisors (1615052880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

855021168 is a wasteful number, since it uses less digits than its factorization.

855021168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191582 (or 191573 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

The square root of 855021168 is about 29240.7449973492. The cubic root of 855021168 is about 949.1298284924.

The spelling of 855021168 in words is "eight hundred fifty-five million, twenty-one thousand, one hundred sixty-eight".