50999980 has 24 divisors (see below), whose sum is σ = 110794320. Its totient is φ = 19696320.

The previous prime is 50999959. The next prime is 50999989. The reversal of 50999980 is 8999905.

It is not an unprimeable number, because it can be changed into a prime (50999989) 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 7 ways as a sum of consecutive naturals, for example, 43386 + ... + 44545.

It is an arithmetic number, because the mean of its divisors is an integer number (4616430).

Almost surely, 2^50999980 is an apocalyptic number.

It is an amenable number.

50999980 is an abundant number, since it is smaller than the sum of its proper divisors (59794340).

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

50999980 is a wasteful number, since it uses less digits than its factorization.

50999980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87969 (or 87967 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 49.

The square root of 50999980 is about 7141.4270282626. The cubic root of 50999980 is about 370.8429284504.

It can be divided in two parts, 509 and 99980, that added together give a square (100489 = 317²).

The spelling of 50999980 in words is "fifty million, nine hundred ninety-nine thousand, nine hundred eighty".