51086580 has 48 divisors (see below), whose sum is σ = 146376384. Its totient is φ = 13305600.

The previous prime is 51086561. The next prime is 51086593. The reversal of 51086580 is 8568015.

It is a congruent number.

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, 7321 + ... + 12480.

It is an arithmetic number, because the mean of its divisors is an integer number (3049508).

Almost surely, 2^51086580 is an apocalyptic number.

It is an amenable number.

51086580 is an abundant number, since it is smaller than the sum of its proper divisors (95289804).

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

51086580 is a wasteful number, since it uses less digits than its factorization.

51086580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19856 (or 19854 counting only the distinct ones).

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

The square root of 51086580 is about 7147.4876705035. The cubic root of 51086580 is about 371.0527117825.

The spelling of 51086580 in words is "fifty-one million, eighty-six thousand, five hundred eighty".