51566056 has 8 divisors (see below), whose sum is σ = 96686370. Its totient is φ = 25783024.

The previous prime is 51566041. The next prime is 51566063. The reversal of 51566056 is 65066515.

51566056 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 only one way, i.e., 51122500 + 443556 = 7150^2 + 666^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 3222871 + ... + 3222886.

Almost surely, 2^51566056 is an apocalyptic number.

It is an amenable number.

51566056 is a deficient number, since it is larger than the sum of its proper divisors (45120314).

51566056 is a wasteful number, since it uses less digits than its factorization.

51566056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6445763 (or 6445759 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 51566056 is about 7180.9509119615. The cubic root of 51566056 is about 372.2099443126.

The spelling of 51566056 in words is "fifty-one million, five hundred sixty-six thousand, fifty-six".