51748847 has 16 divisors (see below), whose sum is σ = 55702080. Its totient is φ = 47980800.

The previous prime is 51748831. The next prime is 51748849. The reversal of 51748847 is 74884715.

It is a cyclic number.

It is not a de Polignac number, because 51748847 - 2⁴ = 51748831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51748798 and 51748807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51748849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84113 + ... + 84725.

It is an arithmetic number, because the mean of its divisors is an integer number (3481380).

Almost surely, 2^51748847 is an apocalyptic number.

51748847 is a deficient number, since it is larger than the sum of its proper divisors (3953233).

51748847 is a wasteful number, since it uses less digits than its factorization.

51748847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754.

The product of its digits is 250880, while the sum is 44.

The square root of 51748847 is about 7193.6671454829. The cubic root of 51748847 is about 372.6492280793.

The spelling of 51748847 in words is "fifty-one million, seven hundred forty-eight thousand, eight hundred forty-seven".