51566884 has 6 divisors (see below), whose sum is σ = 90242054. Its totient is φ = 25783440.

The previous prime is 51566873. The next prime is 51566887. The reversal of 51566884 is 48866515.

It can be written as a sum of positive squares in only one way, i.e., 48580900 + 2985984 = 6970^2 + 1728^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51566884.

It is not an unprimeable number, because it can be changed into a prime (51566887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6445857 + ... + 6445864.

Almost surely, 2^51566884 is an apocalyptic number.

It is an amenable number.

51566884 is a deficient number, since it is larger than the sum of its proper divisors (38675170).

51566884 is a wasteful number, since it uses less digits than its factorization.

51566884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12891725 (or 12891723 counting only the distinct ones).

The product of its digits is 230400, while the sum is 43.

The square root of 51566884 is about 7181.0085642617. The cubic root of 51566884 is about 372.2119365028.

The spelling of 51566884 in words is "fifty-one million, five hundred sixty-six thousand, eight hundred eighty-four".