51606166 has 8 divisors (see below), whose sum is σ = 81483480. Its totient is φ = 24445008.

The previous prime is 51606161. The next prime is 51606199. The reversal of 51606166 is 66160615.

51606166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51606161) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 678991 + ... + 679066.

It is an arithmetic number, because the mean of its divisors is an integer number (10185435).

Almost surely, 2^51606166 is an apocalyptic number.

51606166 is a deficient number, since it is larger than the sum of its proper divisors (29877314).

51606166 is a wasteful number, since it uses less digits than its factorization.

51606166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358078.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 51606166 is about 7183.7431746966. The cubic root of 51606166 is about 372.3064255564.

The spelling of 51606166 in words is "fifty-one million, six hundred six thousand, one hundred sixty-six".