51085860 has 48 divisors (see below), whose sum is σ = 163476096. Its totient is φ = 11676672.

The previous prime is 51085847. The next prime is 51085883. The reversal of 51085860 is 6858015.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60397 + ... + 61236.

It is an arithmetic number, because the mean of its divisors is an integer number (3405752).

Almost surely, 2^51085860 is an apocalyptic number.

It is an amenable number.

51085860 is an abundant number, since it is smaller than the sum of its proper divisors (112390236).

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

51085860 is a wasteful number, since it uses less digits than its factorization.

51085860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121652 (or 121650 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 33.

The square root of 51085860 is about 7147.4373029779. The cubic root of 51085860 is about 371.0509686031.

The spelling of 51085860 in words is "fifty-one million, eighty-five thousand, eight hundred sixty".