51556244 has 12 divisors (see below), whose sum is σ = 92662164. Its totient is φ = 25081344.

The previous prime is 51556243. The next prime is 51556247. The reversal of 51556244 is 44265515.

51556244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 46403344 + 5152900 = 6812^2 + 2270^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51556244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51556243) 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, 174029 + ... + 174324.

It is an arithmetic number, because the mean of its divisors is an integer number (7721847).

Almost surely, 2^51556244 is an apocalyptic number.

It is an amenable number.

51556244 is a deficient number, since it is larger than the sum of its proper divisors (41105920).

51556244 is a wasteful number, since it uses less digits than its factorization.

51556244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348394 (or 348392 counting only the distinct ones).

The product of its digits is 24000, while the sum is 32.

The square root of 51556244 is about 7180.2676830324. The cubic root of 51556244 is about 372.1863347528.

The spelling of 51556244 in words is "fifty-one million, five hundred fifty-six thousand, two hundred forty-four".