51679623 has 8 divisors (see below), whose sum is σ = 68964336. Its totient is φ = 34424000.

The previous prime is 51679619. The next prime is 51679637. The reversal of 51679623 is 32697615.

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

It is a cyclic number.

It is not a de Polignac number, because 51679623 - 2² = 51679619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51679673) 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 7 ways as a sum of consecutive naturals, for example, 2718 + ... + 10523.

It is an arithmetic number, because the mean of its divisors is an integer number (8620542).

Almost surely, 2^51679623 is an apocalyptic number.

51679623 is a deficient number, since it is larger than the sum of its proper divisors (17284713).

51679623 is a wasteful number, since it uses less digits than its factorization.

51679623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14545.

The product of its digits is 68040, while the sum is 39.

The square root of 51679623 is about 7188.8540811453. The cubic root of 51679623 is about 372.4829906802.

The spelling of 51679623 in words is "fifty-one million, six hundred seventy-nine thousand, six hundred twenty-three".