51040056 has 32 divisors (see below), whose sum is σ = 128217600. Its totient is φ = 16931040.

The previous prime is 51040051. The next prime is 51040081. The reversal of 51040056 is 65004015.

It is a happy number.

51040056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51040051) 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, 25 + ... + 10103.

It is an arithmetic number, because the mean of its divisors is an integer number (4006800).

Almost surely, 2^51040056 is an apocalyptic number.

It is an amenable number.

51040056 is an abundant number, since it is smaller than the sum of its proper divisors (77177544).

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

51040056 is a wasteful number, since it uses less digits than its factorization.

51040056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10299 (or 10295 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 51040056 is about 7144.2323590432. The cubic root of 51040056 is about 370.9400396653.

The spelling of 51040056 in words is "fifty-one million, forty thousand, fifty-six".