51761568 has 48 divisors (see below), whose sum is σ = 140265216. Its totient is φ = 16696320.

The previous prime is 51761543. The next prime is 51761581. The reversal of 51761568 is 86516715.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 5721 + ... + 11672.

It is an arithmetic number, because the mean of its divisors is an integer number (2922192).

Almost surely, 2^51761568 is an apocalyptic number.

It is an amenable number.

51761568 is an abundant number, since it is smaller than the sum of its proper divisors (88503648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51761568 is a wasteful number, since it uses less digits than its factorization.

51761568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17437 (or 17429 counting only the distinct ones).

The product of its digits is 50400, while the sum is 39.

The square root of 51761568 is about 7194.5512716222. The cubic root of 51761568 is about 372.6797606916.

The spelling of 51761568 in words is "fifty-one million, seven hundred sixty-one thousand, five hundred sixty-eight".