51551608 has 16 divisors (see below), whose sum is σ = 97884000. Its totient is φ = 25449216.

The previous prime is 51551573. The next prime is 51551611. The reversal of 51551608 is 80615515.

51551608 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 51551608.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 40153 + ... + 41416.

It is an arithmetic number, because the mean of its divisors is an integer number (6117750).

Almost surely, 2^51551608 is an apocalyptic number.

It is an amenable number.

51551608 is a deficient number, since it is larger than the sum of its proper divisors (46332392).

51551608 is a wasteful number, since it uses less digits than its factorization.

51551608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81654 (or 81650 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 31.

The square root of 51551608 is about 7179.9448465848. The cubic root of 51551608 is about 372.1751786028.

The spelling of 51551608 in words is "fifty-one million, five hundred fifty-one thousand, six hundred eight".