50520144 has 80 divisors (see below), whose sum is σ = 138419712. Its totient is φ = 15844224.

The previous prime is 50520143. The next prime is 50520149. The reversal of 50520144 is 44102505.

It is a self number, because there is not a number n which added to its sum of digits gives 50520144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50520143) 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, 73627 + ... + 74309.

Almost surely, 2^50520144 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 50520144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69209856).

50520144 is an abundant number, since it is smaller than the sum of its proper divisors (87899568).

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

50520144 is a wasteful number, since it uses less digits than its factorization.

50520144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784 (or 778 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 50520144 is about 7107.7523873585. The cubic root of 50520144 is about 369.6762300365.

Adding to 50520144 its reverse (44102505), we get a palindrome (94622649).

The spelling of 50520144 in words is "fifty million, five hundred twenty thousand, one hundred forty-four".