51500166 has 8 divisors (see below), whose sum is σ = 103000344. Its totient is φ = 17166720.

The previous prime is 51500159. The next prime is 51500167. The reversal of 51500166 is 66100515.

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

51500166 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51500167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4291675 + ... + 4291686.

It is an arithmetic number, because the mean of its divisors is an integer number (12875043).

Almost surely, 2^51500166 is an apocalyptic number.

51500166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51500166 is a wasteful number, since it uses less digits than its factorization.

51500166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8583366.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 51500166 is about 7176.3616129624. The cubic root of 51500166 is about 372.0513427805.

The spelling of 51500166 in words is "fifty-one million, five hundred thousand, one hundred sixty-six".