51506008 has 8 divisors (see below), whose sum is σ = 96573780. Its totient is φ = 25753000.

The previous prime is 51506003. The next prime is 51506011. The reversal of 51506008 is 80060515.

51506008 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51506003) 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 as a sum of consecutive naturals, namely, 3219118 + ... + 3219133.

Almost surely, 2^51506008 is an apocalyptic number.

It is an amenable number.

51506008 is a deficient number, since it is larger than the sum of its proper divisors (45067772).

51506008 is a wasteful number, since it uses less digits than its factorization.

51506008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6438257 (or 6438253 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 51506008 is about 7176.7686321910. The cubic root of 51506008 is about 372.0654103194.

The spelling of 51506008 in words is "fifty-one million, five hundred six thousand, eight".