51563830 has 8 divisors (see below), whose sum is σ = 92814912. Its totient is φ = 20625528.

The previous prime is 51563801. The next prime is 51563851. The reversal of 51563830 is 3836515.

51563830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 51563792 and 51563801.

It is a congruent number.

It is an unprimeable number.

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, 2578182 + ... + 2578201.

It is an arithmetic number, because the mean of its divisors is an integer number (11601864).

Almost surely, 2^51563830 is an apocalyptic number.

51563830 is a deficient number, since it is larger than the sum of its proper divisors (41251082).

51563830 is a wasteful number, since it uses less digits than its factorization.

51563830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5156390.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 51563830 is about 7180.7959168883. The cubic root of 51563830 is about 372.2045883910.

The spelling of 51563830 in words is "fifty-one million, five hundred sixty-three thousand, eight hundred thirty".