50918220 has 72 divisors (see below), whose sum is σ = 160187664. Its totient is φ = 13576896.

The previous prime is 50918207. The next prime is 50918221. The reversal of 50918220 is 2281905.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (50918221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 379 + ... + 10098.

Almost surely, 2^50918220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50918220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80093832).

50918220 is an abundant number, since it is smaller than the sum of its proper divisors (109269444).

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

50918220 is a wasteful number, since it uses less digits than its factorization.

50918220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10501 (or 10487 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 50918220 is about 7135.7003860868. The cubic root of 50918220 is about 370.6446516751.

The spelling of 50918220 in words is "fifty million, nine hundred eighteen thousand, two hundred twenty".