50999220 has 60 divisors (see below), whose sum is σ = 159991524. Its totient is φ = 13599360.

The previous prime is 50999177. The next prime is 50999227. The reversal of 50999220 is 2299905.

50999220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9474084 + 41525136 = 3078^2 + 6444^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50999227) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 14121 + ... + 17360.

Almost surely, 2^50999220 is an apocalyptic number.

It is an amenable number.

50999220 is an abundant number, since it is smaller than the sum of its proper divisors (108992304).

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

50999220 is a wasteful number, since it uses less digits than its factorization.

50999220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31502 (or 31491 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 50999220 is about 7141.3738174108. The cubic root of 50999220 is about 370.8410863449.

The spelling of 50999220 in words is "fifty million, nine hundred ninety-nine thousand, two hundred twenty".