50809980 has 48 divisors (see below), whose sum is σ = 153213984. Its totient is φ = 12506880.

The previous prime is 50809951. The next prime is 50809999. The reversal of 50809980 is 8990805.

50809980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31791 + ... + 33350.

It is an arithmetic number, because the mean of its divisors is an integer number (3191958).

Almost surely, 2^50809980 is an apocalyptic number.

It is an amenable number.

50809980 is an abundant number, since it is smaller than the sum of its proper divisors (102404004).

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

50809980 is a wasteful number, since it uses less digits than its factorization.

50809980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65166 (or 65164 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 39.

The square root of 50809980 is about 7128.1119519828. Note that the first 3 decimals coincide. The cubic root of 50809980 is about 370.3818312923.

The spelling of 50809980 in words is "fifty million, eight hundred nine thousand, nine hundred eighty".