51704747 has 4 divisors (see below), whose sum is σ = 52804896. Its totient is φ = 50604600.

The previous prime is 51704693. The next prime is 51704753. The reversal of 51704747 is 74740715.

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

It is a cyclic number.

It is not a de Polignac number, because 51704747 - 2¹² = 51700651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51704347) 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, 550004 + ... + 550097.

It is an arithmetic number, because the mean of its divisors is an integer number (13201224).

Almost surely, 2^51704747 is an apocalyptic number.

51704747 is a deficient number, since it is larger than the sum of its proper divisors (1100149).

51704747 is a wasteful number, since it uses less digits than its factorization.

51704747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100148.

The product of its (nonzero) digits is 27440, while the sum is 35.

The square root of 51704747 is about 7190.6012961365. The cubic root of 51704747 is about 372.5433416529.

The spelling of 51704747 in words is "fifty-one million, seven hundred four thousand, seven hundred forty-seven".