51500580 has 48 divisors (see below), whose sum is σ = 144521664. Its totient is φ = 13703040.

The previous prime is 51500573. The next prime is 51500593. The reversal of 51500580 is 8500515.

It is a self number, because there is not a number n which added to its sum of digits gives 51500580.

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 15 ways as a sum of consecutive naturals, for example, 43395 + ... + 44565.

It is an arithmetic number, because the mean of its divisors is an integer number (3010868).

Almost surely, 2^51500580 is an apocalyptic number.

It is an amenable number.

51500580 is an abundant number, since it is smaller than the sum of its proper divisors (93021084).

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

51500580 is a wasteful number, since it uses less digits than its factorization.

51500580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916 (or 1914 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 51500580 is about 7176.3904576047. The cubic root of 51500580 is about 372.0523397277.

The spelling of 51500580 in words is "fifty-one million, five hundred thousand, five hundred eighty".