50222220 has 48 divisors (see below), whose sum is σ = 141324288. Its totient is φ = 13325760.

The previous prime is 50222203. The next prime is 50222239. The reversal of 50222220 is 2222205.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 50222220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10677 + ... + 14643.

It is an arithmetic number, because the mean of its divisors is an integer number (2944256).

Almost surely, 2^50222220 is an apocalyptic number.

It is an amenable number.

50222220 is an abundant number, since it is smaller than the sum of its proper divisors (91102068).

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

50222220 is a wasteful number, since it uses less digits than its factorization.

50222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4190 (or 4188 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 50222220 is about 7086.7637183696. The cubic root of 50222220 is about 368.9481202905.

Subtracting from 50222220 its sum of digits (15), we obtain a palindrome (50222205).

Adding to 50222220 its reverse (2222205), we get a palindrome (52444425).

It can be divided in two parts, 502 and 22220, that added together give a palindrome (22722).

The spelling of 50222220 in words is "fifty million, two hundred twenty-two thousand, two hundred twenty".