51566166 has 16 divisors (see below), whose sum is σ = 114591600. Its totient is φ = 17188704.

The previous prime is 51566153. The next prime is 51566201. The reversal of 51566166 is 66166515.

51566166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 51566166.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477411 + ... + 477518.

It is an arithmetic number, because the mean of its divisors is an integer number (7161975).

Almost surely, 2^51566166 is an apocalyptic number.

51566166 is an abundant number, since it is smaller than the sum of its proper divisors (63025434).

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

51566166 is a wasteful number, since it uses less digits than its factorization.

51566166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954940 (or 954934 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 51566166 is about 7180.9585711101. The cubic root of 51566166 is about 372.2102089767.

The spelling of 51566166 in words is "fifty-one million, five hundred sixty-six thousand, one hundred sixty-six".