51564338 has 16 divisors (see below), whose sum is σ = 89273664. Its totient is φ = 21879600.

The previous prime is 51564323. The next prime is 51564361. The reversal of 51564338 is 83346515.

51564338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 51564298 and 51564307.

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 7 ways as a sum of consecutive naturals, for example, 16820 + ... + 19647.

It is an arithmetic number, because the mean of its divisors is an integer number (5579604).

Almost surely, 2^51564338 is an apocalyptic number.

51564338 is a deficient number, since it is larger than the sum of its proper divisors (37709326).

51564338 is a wasteful number, since it uses less digits than its factorization.

51564338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36577.

The product of its digits is 43200, while the sum is 35.

The square root of 51564338 is about 7180.8312889247. The cubic root of 51564338 is about 372.2058106903.

The spelling of 51564338 in words is "fifty-one million, five hundred sixty-four thousand, three hundred thirty-eight".