53861166 has 32 divisors (see below), whose sum is σ = 121486080. Its totient is φ = 17684568.

The previous prime is 53861161. The next prime is 53861177. The reversal of 53861166 is 66116835.

It is a happy number.

53861166 is a `hidden beast` number, since 5 + 38 + 611 + 6 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 53861166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53861161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3826 + ... + 11061.

It is an arithmetic number, because the mean of its divisors is an integer number (3796440).

Almost surely, 2^53861166 is an apocalyptic number.

53861166 is an abundant number, since it is smaller than the sum of its proper divisors (67624914).

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

53861166 is a wasteful number, since it uses less digits than its factorization.

53861166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14965 (or 14959 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 53861166 is about 7339.0166916284. The cubic root of 53861166 is about 377.6521112650.

The spelling of 53861166 in words is "fifty-three million, eight hundred sixty-one thousand, one hundred sixty-six".