51718847 has 6 divisors (see below), whose sum is σ = 52869648. Its totient is φ = 50570192.

The previous prime is 51718837. The next prime is 51718853. The reversal of 51718847 is 74881715.

It is not a de Polignac number, because 51718847 - 2¹⁴ = 51702463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51718837) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48779 + ... + 49827.

It is an arithmetic number, because the mean of its divisors is an integer number (8811608).

Almost surely, 2^51718847 is an apocalyptic number.

51718847 is a deficient number, since it is larger than the sum of its proper divisors (1150801).

51718847 is an frugal number, since it uses more digits than its factorization.

51718847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2145 (or 1096 counting only the distinct ones).

The product of its digits is 62720, while the sum is 41.

The square root of 51718847 is about 7191.5816758207. The cubic root of 51718847 is about 372.5772030423.

The spelling of 51718847 in words is "fifty-one million, seven hundred eighteen thousand, eight hundred forty-seven".