51748685 has 8 divisors (see below), whose sum is σ = 65366880. Its totient is φ = 39219984.

The previous prime is 51748661. The next prime is 51748687. The reversal of 51748685 is 58684715.

It is a happy number.

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 51748685 - 2⁶ = 51748621 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51748687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272267 + ... + 272456.

It is an arithmetic number, because the mean of its divisors is an integer number (8170860).

Almost surely, 2^51748685 is an apocalyptic number.

It is an amenable number.

51748685 is a deficient number, since it is larger than the sum of its proper divisors (13618195).

51748685 is a wasteful number, since it uses less digits than its factorization.

51748685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544747.

The product of its digits is 268800, while the sum is 44.

The square root of 51748685 is about 7193.6558855703. The cubic root of 51748685 is about 372.6488392189.

The spelling of 51748685 in words is "fifty-one million, seven hundred forty-eight thousand, six hundred eighty-five".