51791678 has 8 divisors (see below), whose sum is σ = 78246840. Its totient is φ = 25709400.

The previous prime is 51791647. The next prime is 51791711. The reversal of 51791678 is 87619715.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92873 + ... + 93428.

It is an arithmetic number, because the mean of its divisors is an integer number (9780855).

Almost surely, 2^51791678 is an apocalyptic number.

51791678 is a deficient number, since it is larger than the sum of its proper divisors (26455162).

51791678 is a wasteful number, since it uses less digits than its factorization.

51791678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186442.

The product of its digits is 105840, while the sum is 44.

The square root of 51791678 is about 7196.6435231989. The cubic root of 51791678 is about 372.7520099999.

The spelling of 51791678 in words is "fifty-one million, seven hundred ninety-one thousand, six hundred seventy-eight".