51168646 has 8 divisors (see below), whose sum is σ = 76784400. Its totient is φ = 25573848.

The previous prime is 51168643. The next prime is 51168659. The reversal of 51168646 is 64686115.

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 (51168643) 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, 4455 + ... + 11053.

It is an arithmetic number, because the mean of its divisors is an integer number (9598050).

Almost surely, 2^51168646 is an apocalyptic number.

51168646 is a deficient number, since it is larger than the sum of its proper divisors (25615754).

51168646 is a wasteful number, since it uses less digits than its factorization.

51168646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10478.

The product of its digits is 34560, while the sum is 37.

The square root of 51168646 is about 7153.2262651198. The cubic root of 51168646 is about 371.2512930986.

The spelling of 51168646 in words is "fifty-one million, one hundred sixty-eight thousand, six hundred forty-six".