51056538 has 16 divisors (see below), whose sum is σ = 109968096. Its totient is φ = 15709680.

The previous prime is 51056531. The next prime is 51056563. The reversal of 51056538 is 83565015.

51056538 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 = 51056499 and 51056508.

It is not an unprimeable number, because it can be changed into a prime (51056531) 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 7 ways as a sum of consecutive naturals, for example, 327208 + ... + 327363.

It is an arithmetic number, because the mean of its divisors is an integer number (6873006).

Almost surely, 2^51056538 is an apocalyptic number.

51056538 is an abundant number, since it is smaller than the sum of its proper divisors (58911558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51056538 is a wasteful number, since it uses less digits than its factorization.

51056538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654589.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 51056538 is about 7145.3857838468. The cubic root of 51056538 is about 370.9799637056.

The spelling of 51056538 in words is "fifty-one million, fifty-six thousand, five hundred thirty-eight".