50051220 has 48 divisors (see below), whose sum is σ = 146240640. Its totient is φ = 12766336.

The previous prime is 50051219. The next prime is 50051227. The reversal of 50051220 is 2215005.

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 50051220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50051227) 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, 16755 + ... + 19514.

It is an arithmetic number, because the mean of its divisors is an integer number (3046680).

Almost surely, 2^50051220 is an apocalyptic number.

It is an amenable number.

50051220 is an abundant number, since it is smaller than the sum of its proper divisors (96189420).

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

50051220 is a wasteful number, since it uses less digits than its factorization.

50051220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36304 (or 36302 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 50051220 is about 7074.6886857303. The cubic root of 50051220 is about 368.5289043284.

Adding to 50051220 its reverse (2215005), we get a palindrome (52266225).

The spelling of 50051220 in words is "fifty million, fifty-one thousand, two hundred twenty".