51608 has 8 divisors (see below), whose sum is σ = 96780. Its totient is φ = 25800.

The previous prime is 51607. The next prime is 51613. The reversal of 51608 is 80615.

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

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 51608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3218 + ... + 3233.

2⁵¹⁶⁰⁸ is an apocalyptic number.

It is an amenable number.

51608 is a deficient number, since it is larger than the sum of its proper divisors (45172).

51608 is a wasteful number, since it uses less digits than its factorization.

51608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6457 (or 6453 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 51608 is about 227.1739421677. The cubic root of 51608 is about 37.2310835894.

The spelling of 51608 in words is "fifty-one thousand, six hundred eight".