51086960 has 20 divisors (see below), whose sum is σ = 118777368. Its totient is φ = 20434752.

The previous prime is 51086947. The next prime is 51087007. The reversal of 51086960 is 6968015.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 51086960.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 319214 + ... + 319373.

Almost surely, 2^51086960 is an apocalyptic number.

It is an amenable number.

51086960 is an abundant number, since it is smaller than the sum of its proper divisors (67690408).

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

51086960 is a wasteful number, since it uses less digits than its factorization.

51086960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638600 (or 638594 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 51086960 is about 7147.5142532212. The cubic root of 51086960 is about 371.0536317872.

The spelling of 51086960 in words is "fifty-one million, eighty-six thousand, nine hundred sixty".