51863723 has 4 divisors (see below), whose sum is σ = 52322808. Its totient is φ = 51404640.

The previous prime is 51863671. The next prime is 51863743. The reversal of 51863723 is 32736815.

51863723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51863723 - 2⁸ = 51863467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51863743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229373 + ... + 229598.

It is an arithmetic number, because the mean of its divisors is an integer number (13080702).

Almost surely, 2^51863723 is an apocalyptic number.

51863723 is a deficient number, since it is larger than the sum of its proper divisors (459085).

51863723 is a wasteful number, since it uses less digits than its factorization.

51863723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459084.

The product of its digits is 30240, while the sum is 35.

The square root of 51863723 is about 7201.6472421245. The cubic root of 51863723 is about 372.9247692603.

The spelling of 51863723 in words is "fifty-one million, eight hundred sixty-three thousand, seven hundred twenty-three".