50421220 has 48 divisors (see below), whose sum is σ = 108385200. Its totient is φ = 19699200.

The previous prime is 50421211. The next prime is 50421229. The reversal of 50421220 is 2212405.

It is an interprime number because it is at equal distance from previous prime (50421211) and next prime (50421229).

It can be written as a sum of positive squares in 8 ways, for example, as 15303744 + 35117476 = 3912^2 + 5926^2 .

It is a junction number, because it is equal to n+sod(n) for n = 50421194 and 50421203.

It is not an unprimeable number, because it can be changed into a prime (50421229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220066 + ... + 220294.

It is an arithmetic number, because the mean of its divisors is an integer number (2258025).

Almost surely, 2^50421220 is an apocalyptic number.

It is an amenable number.

50421220 is an abundant number, since it is smaller than the sum of its proper divisors (57963980).

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

50421220 is a wasteful number, since it uses less digits than its factorization.

50421220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 50421220 is about 7100.7900968836. The cubic root of 50421220 is about 369.4347834652.

Adding to 50421220 its reverse (2212405), we get a palindrome (52633625).

The spelling of 50421220 in words is "fifty million, four hundred twenty-one thousand, two hundred twenty".