51248866 has 8 divisors (see below), whose sum is σ = 76908780. Its totient is φ = 25612608.

The previous prime is 51248861. The next prime is 51248881. The reversal of 51248866 is 66884215.

It can be written as a sum of positive squares in 2 ways, for example, as 50708641 + 540225 = 7121^2 + 735^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (51248861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1230 + ... + 10198.

Almost surely, 2^51248866 is an apocalyptic number.

51248866 is a deficient number, since it is larger than the sum of its proper divisors (25659914).

51248866 is a wasteful number, since it uses less digits than its factorization.

51248866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11828.

The product of its digits is 92160, while the sum is 40.

The square root of 51248866 is about 7158.8313292045. The cubic root of 51248866 is about 371.4452023971.

The spelling of 51248866 in words is "fifty-one million, two hundred forty-eight thousand, eight hundred sixty-six".