51657166 has 8 divisors (see below), whose sum is σ = 84529944. Its totient is φ = 23480520.

The previous prime is 51657163. The next prime is 51657173. The reversal of 51657166 is 66175615.

51657166 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 (51657163) 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, 1174005 + ... + 1174048.

It is an arithmetic number, because the mean of its divisors is an integer number (10566243).

Almost surely, 2^51657166 is an apocalyptic number.

51657166 is a deficient number, since it is larger than the sum of its proper divisors (32872778).

51657166 is a wasteful number, since it uses less digits than its factorization.

51657166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348066.

The product of its digits is 37800, while the sum is 37.

The square root of 51657166 is about 7187.2919795984. The cubic root of 51657166 is about 372.4290296155.

The spelling of 51657166 in words is "fifty-one million, six hundred fifty-seven thousand, one hundred sixty-six".