51679938 has 8 divisors (see below), whose sum is σ = 103359888. Its totient is φ = 17226644.

The previous prime is 51679921. The next prime is 51679939. The reversal of 51679938 is 83997615.

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

51679938 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51679939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4306656 + ... + 4306667.

It is an arithmetic number, because the mean of its divisors is an integer number (12919986).

Almost surely, 2^51679938 is an apocalyptic number.

51679938 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.

51679938 is a wasteful number, since it uses less digits than its factorization.

51679938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8613328.

The product of its digits is 408240, while the sum is 48.

The square root of 51679938 is about 7188.8759900279. The cubic root of 51679938 is about 372.4837474704.

The spelling of 51679938 in words is "fifty-one million, six hundred seventy-nine thousand, nine hundred thirty-eight".