51766747 has 4 divisors (see below), whose sum is σ = 51841296. Its totient is φ = 51692200.

The previous prime is 51766733. The next prime is 51766763. The reversal of 51766747 is 74766715.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51766747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51766727) 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, 36223 + ... + 37624.

It is an arithmetic number, because the mean of its divisors is an integer number (12960324).

Almost surely, 2^51766747 is an apocalyptic number.

51766747 is a deficient number, since it is larger than the sum of its proper divisors (74549).

51766747 is an equidigital number, since it uses as much as digits as its factorization.

51766747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74548.

The product of its digits is 246960, while the sum is 43.

The square root of 51766747 is about 7194.9111877771. The cubic root of 51766747 is about 372.6921897594.

The spelling of 51766747 in words is "fifty-one million, seven hundred sixty-six thousand, seven hundred forty-seven".