50665820 has 12 divisors (see below), whose sum is σ = 106398264. Its totient is φ = 20266320.

The previous prime is 50665819. The next prime is 50665829. The reversal of 50665820 is 2856605.

It is a happy number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50665829) by changing a digit.

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, 1266626 + ... + 1266665.

It is an arithmetic number, because the mean of its divisors is an integer number (8866522).

Almost surely, 2^50665820 is an apocalyptic number.

It is an amenable number.

50665820 is an abundant number, since it is smaller than the sum of its proper divisors (55732444).

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

50665820 is a wasteful number, since it uses less digits than its factorization.

50665820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2533300 (or 2533298 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 50665820 is about 7117.9926945734. The cubic root of 50665820 is about 370.0312123657.

The spelling of 50665820 in words is "fifty million, six hundred sixty-five thousand, eight hundred twenty".