51884729 has 8 divisors (see below), whose sum is σ = 56212800. Its totient is φ = 47604816.

The previous prime is 51884719. The next prime is 51884743. The reversal of 51884729 is 92748815.

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 51884729 - 2⁸ = 51884473 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51884729.

It is not an unprimeable number, because it can be changed into a prime (51884719) 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, 9779 + ... + 14120.

It is an arithmetic number, because the mean of its divisors is an integer number (7026600).

Almost surely, 2^51884729 is an apocalyptic number.

It is an amenable number.

51884729 is a deficient number, since it is larger than the sum of its proper divisors (4328071).

51884729 is a wasteful number, since it uses less digits than its factorization.

51884729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24079.

The product of its digits is 161280, while the sum is 44.

The square root of 51884729 is about 7203.1055108196. The cubic root of 51884729 is about 372.9751101658.

The spelling of 51884729 in words is "fifty-one million, eight hundred eighty-four thousand, seven hundred twenty-nine".