51805672 has 16 divisors (see below), whose sum is σ = 98366400. Its totient is φ = 25574640.

The previous prime is 51805667. The next prime is 51805679. The reversal of 51805672 is 27650815.

It is not an unprimeable number, because it can be changed into a prime (51805679) 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, 40354 + ... + 41617.

It is an arithmetic number, because the mean of its divisors is an integer number (6147900).

Almost surely, 2^51805672 is an apocalyptic number.

It is an amenable number.

51805672 is a deficient number, since it is larger than the sum of its proper divisors (46560728).

51805672 is a wasteful number, since it uses less digits than its factorization.

51805672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82056 (or 82052 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 51805672 is about 7197.6157163327. The cubic root of 51805672 is about 372.7855792404.

The spelling of 51805672 in words is "fifty-one million, eight hundred five thousand, six hundred seventy-two".